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Welcome to Knight’s Mark Security Doors and Windows. By accessing this website and/or placing an order with Knightsmark Ltd, you are agreeing to comply with and be bound by the following terms and conditions of use, which together with our privacy policy govern Knightsmark Ltd relationship with you in relation to this website. If you disagree with any part of these terms and conditions, please do not use our website.

The term ‘Knightsmark Ltd’ or ‘us’ or ‘we’ refers to the owner of the website whose registered trading address is: 30 Eden Way, E3 2JD, London, United Kingdom; contact email address: info@knightsmark.co.uk ; phone number 020 8981 5400. Our company registration number is 11730702, Registered in England, United Kingdom. The term ‘you’ refers to the user or viewer of our website.


The use of this website is subject to the following terms of use:

  1. The content of the pages of this website is for your general information and use only. It is subject to change without notice.
  2. This website uses cookies to monitor browsing preferences. We will never disclose your information to third parties other than those directly involved with our business or the ordering process.
  3. Neither we nor any third parties provide any warranty or guarantee as to the accuracy, timeliness, performance, completeness or suitability of the information and materials found or offered on this website for any purpose. You acknowledge that such information and materials may contain inaccuracies or errors and we expressly exclude liability for any such inaccuracies or errors fully permitted by law.
  4. Neither we nor any third parties provide any warranty or guarantee as to the accuracy, timeliness, performance, completeness or suitability of the information and materials found or offered on this website for any purpose. You acknowledge that such information and materials may contain inaccuracies or errors and we expressly exclude liability for any such inaccuracies or errors fully permitted by law.
  5. Your use of any information or materials on this website is entirely at your own risk, for which we shall not be liable. It shall be your own responsibility to ensure that any products, services or information available through this website meet your specific requirements.
  6. This website contains material which is owned by or licensed to us. This material includes, but is not limited to, the design, layout, look, appearance and graphics. Reproduction is prohibited other than in accordance with the copyright notice, which forms part of these terms and conditions.
  7. All trademarks reproduced in this website, which are not the property of, or licensed to the operator, are acknowledged on the website.
  8. Unauthorized use of this website may give rise to a claim for damages and/or be a criminal offence.
  9. From time to time, this website may also include links to other websites. These links are provided for your convenience to provide further information. They do not signify that we endorse the website(s). We have no responsibility for the content of the linked website(s).
  10. Your use of this website and any dispute arising out of such use of the website is subject to the laws of the United Kingdom.


The information contained in this website is for general information purposes only. The information is provided by Knightsmark Ltd. and while we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.

In no event, will we be liable for any loss or damage including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of data or profits arise out of, or in connection with, the use of this website.

Through this website, you can link to other websites which are not under the control of Knightsmark Ltd. We have no control over the nature, content and availability of those sites. The inclusion of any links does not necessarily imply a recommendation or endorse the views expressed within them.

Every effort is made to keep the website up and running smoothly. However, Knightsmark Ltd takes no responsibility for, and will not be liable for, the website being temporarily unavailable due to technical issues beyond our control.



  1. “Company” means ‘Knightsmark Ltd’, owner of Knights Mark Security Doors & Windows product line.
  2. “Customer” means the person, firm, company or other organisation to whom the Company agrees to supply goods.
  3. “Goods” means any product or service supplied by the Company.
  4. “Order”, “Agreement”, “Offer” means an agreement via electronic confirmation (or hand signed) which acts as a legally binding contract between the Company and the Customer for the supply (and installation were applicable) of Goods incorporating these terms.
  5. “Terms” means the terms set out in this document and any special terms agreed in writing between the Company and the Customer.
  6. “Works” means any product or services installed by the Company.

By confirming the Order with specifications provided the Customer agrees to these terms and conditions (Contract) of the Company’s Offer, and this is the complete agreement between the Customer and the Company and supersedes all prior representations, negotiations, arrangements or agreements between the parties in relation to the supply and installation.  The Customer and the Company shall not vary this Agreement except in writing signed (or via email confirmation) by each of them. The Customer may place the order (and installation – if applicable) works from the Company by completing, executing and sending to the Company by mail or electronic means.

  • Customer agrees to pay the price as outlined in Offer provided by Knightsmark Ltd according to the contract sum.
  • For order(s) under the value of £2500 (excluding VAT) the customer is required to make 50% as an advance (deposit) payment and 50% 1 day before delivery.
  • For payment(s) over the value of £2500 (excluding VAT) company require 50% as deposit payment to start production then 40% 3 days before delivery/installation agreed and 10% after installation is completed.
  • For supply of Goods only the final payment must be complete 24 hours before agreed delivery/collection date.
  • If any of the payments are not complete as in the ‘Payment Terms’, we reserve the right to suspend any work and further deliveries until the payments are complete. Ownership of the product shall only pass to the Customer after full payment is made.
  • Company shall not proceed with any works/manufacture/installation without receiving any payment.
  • Final quotation made in writing to the customer is valid for 21 days. We have the right to alter the price if a customer returns after the 21 day period. Due to any factor beyond our control (such as alteration duties, exchange rate, and significant increase in cost of labour, other manufacturing costs) prices may increase, but the customer would be informed prior. If necessary, receipts would be provided as proof.
  • Company reserves the right to charge Customer extra sum for any additional consultations or services.
  • Company shall not be liable for error made in the final quotation due to lack of detailed information given by the customer.
  • The customer is to cover for any loss or extra cost incurred by the company through lack of instruction, or delay in taking the order or any other matter.
  • The contracts deliverables shall be the items outlined in Invoice, drawing or any other item requested and agreed between the Company and the Customers.
  • The Company shall deliver to the Customer the Goods within the time frame given. The time specified is an estimate and it may take up to fourteen weeks for the goods to be delivered to the Customer. The Company may reschedule the Delivery Date of the Goods, but – the Customer would be notified via letter or electronic means (email or phone call).
  • The Company shall supply the Goods in accordance with the Offer as specified in the order and any reasonable directions given by the Customer from time to time within the scope of this Contract in a safe manner, and in compliance with all applicable standards, awards, laws and regulations (including without limitation, awards and laws applicable to the Supplier’s employees).
  • If the customer is not ready to accept the Goods on their arrival – he would be subject to storage charges. We can keep the product up to 14 days in our warehouse free of charge, but if additional time is needed the Company would charge the Customer £20 per square metre per week.
  • Specifications can be limited to the product’s size (width/height). Customer needs to check if all the specifications are applicable before placing an order.

The Customer shall provide adequate and safe access to its site to enable the Company to fulfil its obligations under the Order/Agreement. If appropriate access is not provided to the site (no parking space, no one is present on an agreed time for delivery/installation) or the appointment is rescheduled without 24 hour notice the company reserves the right to charge any additional costs incurred (such as re- delivery, re – arrangement of installation).


Any notice, document or other communication required or allowed to be given in accordance with this Order/Agreement will be deemed to be sufficiently given if:

  • delivered to the party concerned; or
  • sent by pre-paid post addressed to the party to whom it is given; or
  • sent by facsimile transmission to the party or electronic means.
  • a notice will be deemed to have been received two (2) days after the date of posting if sent by pre-paid post or at the time the transmitting fax machine records the completion of the transmission.
  • Any defects in the installation process due to faulty workmanship shall be rectified/inspected by the Company within thirty (30) days of the defect becoming notified to the Company and at the Company’s expense.
  • The Goods sold are subject to the Customer’s reasonable inspection and approval within the same day of the delivery.
  • Any further details shall be given to the Customer in the installation process guide, guarantee document regarding the Order.

Where the Goods are to be installed or fitted by the Company in or at the Customer’s site, then the following conditions shall apply:

  • The Company shall undertake the installation work (Works) in a proper and workmanlike manner.
  • If the Customer notifies the Company that any of the Works is found to be defective or not in compliance with the Agreement/Order, the Company shall within 14 days of being notified of such defects or non-compliance remedy any default to the satisfaction of the Customer as part of the Contract Sum.
  • The Company shall supply all labour, tools, equipment and materials necessary to complete the Works.
  • The Company shall not impede or interfere with any other Works undertaken by the Customer on the site.
  • For detailed installation process please see ‘Installation Process’ that has been emailed with final product drawings.

This Contract shall be governed and construed according to the laws of United Kingdom and the parties shall submit to the jurisdiction of its court.


Neither Party will be liable for any delay in performing or failure to perform any of its obligations under the Agreement/Order if such delay or failure is caused by force majeure, such as civil disorder, military action, natural disaster and other circumstances which are beyond the control of the Party in question. In such event, the party will give immediate notice in writing to the other Party of the existence of such cause or event and of the likelihood of delay.


The company is permitted without prior written consent of the other party to assign all or any part of its right, title or interest in the Order; The Company may sub contract works related to this contract to aid effectiveness


All information which comes into the Company’s possession or knowledge in connection with the Agreement/Order is to be treated as strictly confidential. The Company should not communicate such information to any third party without the prior written approval of Customer. These obligations shall survive the expiration or termination of this Contract.

  1. WAIVER 

Failure  by  either  Party  to  insist  in  any  one  or  more  instances  on  a  strict  performance of  any  of  the  provisions  of  the Order/Agreement shall  not  constitute  a  waiver  or  relinquishment  of  the  right  to  enforce  the  provisions  of  this  Order in  future  instances,  but  this  right  shall  continue  and  remain in full force and effect.


If any part of this Contract is found to be invalid or unenforceable, that part will be severed from this Contract and the remainder of the Contract shall remain in full force.


This Agreement and any Exhibits embody the entire agreement between the Parties and supersede all prior agreements and understandings, if any, relating to the subject matter.


Information and notices must be sent to the addresses provided in the agreement. The terms of suspension of this agreement shall be entitled under the following circumstances:

13.1 The Company may terminate this Contract if becomes insolvent, commits an act of bankruptcy, calls a meeting of creditors, is appointed by bankruptcy administrator to process into liquidation or is deemed insolvent for the purposes of the Corporations Law.

13.2 The Customer may terminate this Contract within a period of 3 working days once the contract/order has started (in writing or electronic means) within a written notice to the Company. Company has the right to charge for any expenses that occurred while dealing with the customer. Knightsmark Ltd would have the right to evaluate any costs that occurred and such costs would be taken off from the Customers deposit.

13.3 All non-agreements between the Company and Customer and potential lead to termination of the contract are to be solved in polite manner. Otherwise the contract termination to be processed under the laws of the United Kingdom.

13.4 Should the Company terminate the Order pursuant to this sub clause the company shall within thirty (30) days of such termination pay the other party any amounts owed by it to the other pursuant.


Any disagreement between the Customer and the Company arising, if not agreed, shall be referred to an arbitrator mutually agreed between the parties.


The Company warrants/ guarantees:

  • the Goods conform to their description and any specification issued by the Customer; and the Goods are of new and merchantable quality, fit for the purpose for which they have been sold and any damage or issue to the Goods supplied by the Company to the Customer shall be rectified.
  • Damaged caused by improper use, third party damage or abnormal wear and tear, exposure to excessive heat or other weather conditions would void the guarantee.
  • If the Customer notifies the Company that any of the work is found to be defective or not in compliance with these Terms and Conditions, the Company shall within 30 calendar days of being notified of such defects or non-compliance remedy any default to the satisfaction of the Customer.
  • Any defects in the installation process shall be rectified/inspected by the Company within 30 calendar days from the day the defect was reported to the Company and at the Company’s expense.
  • All guarantees/warranties are available in the Quote/Order and guarantee document. Some warranties will vary from standard depending on the product specification (nonstandard sizes, openings, special requests etc.)
  • The guarantee only applies to products purchased and installed within the UK and is used in the manner that it was intended.
  • Knightsmark Ltd installers will always adjust all locks to ensure it works to a high standard, but due to the setting up period or unforeseen building movements, such as those caused by the creation of new openings or extensions (such as porches, side extensions etc) locks may need additional adjustment. Such follow up adjustments are not covered by a guarantee and additional visits for will be subject to a door Adjustment Charge starting from £100+VAT.
  • Quotation images/logos are guides only.

In the event of a breakdown, the following warranty and procedure applies for security doors, aluminium, uPVC and wooden windows and doors:

  • Contact our office within 5 business days of becoming aware of any potential defects detailing any evident faults or errors in the Works. The Company will arrange for the installers to attend and diagnose the fault.
  • If the fault is an installation error or manufacturing defect, it is Knightsmark Ltd team responsibility to repair and no costs will be covered by the client.
  • The Customer shall provide unrestricted access to the Works, during business hours, to carry out an inspection or repair works that are necessary under the terms of guarantee provided.
  • In the event that faults or errors are discovered which are covered within the terms of this guarantee: Acknowledge that the Company will chose to either repair the Goods; or replace the Goods.
  • In the event that no faults or errors are discovered which are covered within the terms of this guarantee: Pay the Company Call Out fee of £150 plus VAT (Additional fees outside M25 apply).
  • In the event of a replacement: Acknowledge that replacement goods may not be an exact cosmetic or colour match with the original goods.

The call out will be chargeable if:

  • Goods warranty has expired
  • The defect is due to installation not carried out by Knightsmark Ltd team.
  • Goods have been altered or modified by the client.
  • The defect is a result of misuse or improper cleaning and maintenance.

The Company shall not be responsible for:

  • Defects in any materials which were not sold to the Guarantee Beneficiary/Customer by the Company
  • Breaches of the Building Regulations where the Customer does not hold a Building Regulations Compliance Certificate issued in respect of the Works.
  • The elimination of condensation.
  • Repairs to the Works instructed by the Guarantee Beneficiary without the Company’s written approval
  • Deterioration to handles, letterboxes, doorknobs and other moving parts due to wear and tear.


For any emergency call outs within ‘Knights Mark Security Doors and Windows’ working hours you can contact our office, alternatively you can contact our approved locksmiths:

The London Locksmith – 02031891289


Barrs Security Locksmiths UK – 020 77367668


Any additional non – emergency keys required can be ordered by contacting our office via email or phone.