AwardedAwarded 27 May 2026

Windsor Estate External Redecorations and Refurbishment

The Royal Household · Local or regional public body

In brief

The Royal Household awarded construction and building maintenance work to Thomas Sinden Limited, Trident Maintenance Services Ltd and Ian Williams Limited on 27 May 2026.

It is a framework worth up to £5,000,000 including VAT: the most the buyer expects to spend across all suppliers, not one contract.

The contract runs for 4 years, starting 1 April 2026.

It is split into 2 lots, so a supplier can bid for part of the work.

The buyer says it is suitable for small and medium-sized businesses.

Built from the notice's own fields. Always check the official notice before you bid.

What the notice says

For more information about this opportunity, please visit the Delta portal at: https://www.delta-esourcing.com/tenders/UK-London:-Decoration-work./27S668S3SN To respond to this opportunity, please click here: https://www.delta-esourcing.com/respond/27S668S3SN If you experience any technical difficulties from accessing the above url, then please contact the Delta eSourcing Helpdesk on call [phone number removed] or email helpdesk@delta-esourcing.com. Applicants must be technically able to deliver against the contract scope as follows: a.Delivering planned external redecorations to all the previously decorated surfaces within the estate, along with cleaning external elements such as rainwater…Read the full description
For more information about this opportunity, please visit the Delta portal at: https://www.delta-esourcing.com/tenders/UK-London:-Decoration-work./27S668S3SN To respond to this opportunity, please click here: https://www.delta-esourcing.com/respond/27S668S3SN If you experience any technical difficulties from accessing the above url, then please contact the Delta eSourcing Helpdesk on call [phone number removed] or email helpdesk@delta-esourcing.com. Applicants must be technically able to deliver against the contract scope as follows: a.Delivering planned external redecorations to all the previously decorated surfaces within the estate, along with cleaning external elements such as rainwater goods. b.Including for all necessary rubbing down, preparation, and if required, stripping down to bare metal/timber prior to works. c.Maintain all work areas in a clean, tidy and safe condition free from oil, grease, dust and debris. d.Allow for appropriate storage for tolls and materials. Clearing of all debris, waste and rubbish generated on site, including keeping all work areas in an orderly state. e.Carrying out of repairs to windows/doors, and all other timber repair. Including piecing in new timber and conservation repair to match. f.Carrying out of repairs to metal windows/doors, and any other metalwork repair. Including replacing / repairing any existing doors, windows, frames, railings, gates and any other metal fixtures to match. g.Replacement or overhaul of windows/door of all types, to be in keeping with the architecture of the estate, as required. Leaving in full working order. h.Replacement or overhaul of rainwater goods of all types, to be in keeping with the architecture of the estate, as required. Refixing and ensuring that falls are sufficient to shed rainwater to outlets. i.Installing thermal upgrades to all windows, by the insertion of draft proofing. j.Arranging for the supply and fit of secondary glazing alternatives. k.Carrying out of masonry repairs, such as stonework in the areas where decoration works are being undertaken. Including for repointing, mortar repair, sourcing and piecing in new stone to match. l.Acting as the Principal Contractor for Health & Safety management of the site, including CDM duties. m.Provision of all required access arrangements to facilitate the works. Including full scaffolding, towers and mobile working platforms. Allowing for debris netting and boarding to prevent accommodation of waste in work areas. The contract shall operate as a Framework for a 4 year period and will be split between 2 lots, contractors can apply for either lot. Each lot covers areas comprising as follows; Lot A – 2 contractors to be appointed •Windsor Castle (5 phase programme) •Windsor Royal Mews (5 phase programme) Lot B – 1 contractor to be appointed •Home Park. Predominately residential properties, but includes Frogmore House, various stores, the gardener’s buildings and the conservation workshops. (5 phase programme) •Hampton Court Royal Paddocks. Works in each location will be allocated each financial year depending on available budgets. Works will usually be allocated in phased areas, but may be required for smaller areas from time to time. Contractors will be required to review allocated areas to confirm the level of work required. The contractor will be required to arrange access with residential properties and will be required to provide security cleared staff to work throughout the contract. Contactors will be required to escort their sub-contractors at all times. The operations of the estate will include regular events, contractors will be required to programme their works to avoid inconvenience during events. At times it will be necessary to rearrange work at short notice due to events occurring on site. Please note, in this instance, The Royal Household has voluntarily decided to issue a Notice as the total value of works is below the threshold. This procurement process therefore is not run in accordance to Procurement Act regulations. For more information about this opportunity, please visit the eSourcing portal at: https://www.delta-esourcing.com/tenders/UK-UK-London:-Decoration-work./TZ429572TP To respond to this opportunity, please click here: https://www.delta-esourcing.com/respond/TZ429572TP

Lots

LotTradeValue
Windsor Castle and Windsor Royal Mews
1 April 2026 to 1 April 2030
What this lot covers

Lot A – 2 contractors to be appointed •Windsor Castle (5 phase programme) •Windsor Royal Mews (5 phase programme)

Construction, Building maintenance and repairs£3,800,000
Home Park and Hampton Court Royal Paddocks
1 April 2026 to 1 April 2030
What this lot covers

Lot B – 1 contractor to be appointed •Home Park. Predominately residential properties, but includes Frogmore House, various stores, the gardener’s buildings and the conservation workshops. (5 phase programme) •Hampton Court Royal Paddocks.

Construction, Building maintenance and repairs£1,200,000

Who won

WinnerLotValueDates
Thomas Sinden Limited (SME)
Trident Maintenance Services Ltd (SME)
6 bids received
Windsor Castle and Windsor Royal Mews£3,800,000
Awarded 27 May 2026
Ian Williams Limited
3 bids received
Home Park and Hampton Court Royal Paddocks£1,200,000
Awarded 27 May 2026

Values as the award notice gives them, excluding VAT where stated.

Timeline

  1. Tender notice · UK4, notice 075375-2025
  2. Contract award notice · UK6, notice 049965-2026

About the buyer

The Royal HouseholdLast 12 months

Procurements

15

Awards

10

Suppliers it has used most for construction

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From notice 075375-2025 on Find a Tender, first published 19 November 2025, last updated 27 May 2026. We last checked for changes on 28 September 2026.