Source: https://tendernation.io/suppliers/cosyseal-double-glazing [Skip to main content](#main-content) Supplier profile # Cosyseal (Double Glazing) Limited Public sector contracts won, from published award notices SME[Companies House 04044256](https://find-and-update.company-information.service.gov.uk/company/04044256) [ Follow competitor](/login "Sign in to follow competitors")[ Compete for this work](/register) Contracts won 15 since 23 Nov 2015 Total awarded £10,816,307 where values were published Buyers 7 public bodies Latest win 11 Jun 2026 ## Contracts ending soon Contracts ending in the next 18 months. Buyers usually re-tender before the end date, so these are openings for competitors. - [Window replacements - Eleanor Court](https://tendernation.io/opportunities/01a13be3-23b6-7186-ae8a-1d76e930457b/window-replacements-eleanor-court)[Southern Housing](https://tendernation.io/buyers/southern-housing) £107,048 Ends 31 Jan 2027 - [Lansdowne Green Window Replacement](https://tendernation.io/opportunities/01a13f2b-0de2-7243-8c6b-593a3f8eacc7/lansdowne-green-window-replacement)[Southern Housing](https://tendernation.io/buyers/southern-housing) Value not counted: framework or estimated ceiling Ends 31 Mar 2027 - [Lansdowne Green Window Replacement](https://tendernation.io/opportunities/01a13d22-8b84-7361-a41d-5acac867ed71/lansdowne-green-window-replacement)[Southern Housing](https://tendernation.io/buyers/southern-housing) Value not counted: framework or estimated ceiling Ends 31 Mar 2027 ## Recent contract awards - [Window replacements - Eleanor Court](https://tendernation.io/opportunities/01a13be3-23b6-7186-ae8a-1d76e930457b/window-replacements-eleanor-court)[Southern Housing](https://tendernation.io/buyers/southern-housing) £107,048 11 Jun 2026 - [GB-Colindale: Glazing Repair Works](https://tendernation.io/opportunities/01a13cfb-6201-711a-81ae-97f0da0643b4/gb-colindale-glazing-repair-works)[Barnet Homes Ltd](https://tendernation.io/buyers/barnet-homes-ltd) £160,000 16 Jun 2025 - [Lansdowne Green Window Replacement](https://tendernation.io/opportunities/01a13f2b-0de2-7243-8c6b-593a3f8eacc7/lansdowne-green-window-replacement)[Southern Housing](https://tendernation.io/buyers/southern-housing) Value not counted: framework or estimated ceiling 24 Mar 2025 - [Lansdowne Green Window Replacement](https://tendernation.io/opportunities/01a13d22-8b84-7361-a41d-5acac867ed71/lansdowne-green-window-replacement)[Southern Housing](https://tendernation.io/buyers/southern-housing) Value not counted: framework or estimated ceiling 24 Mar 2025 - [Lansdowne Green Window Replacement](https://tendernation.io/opportunities/01a13bcb-57fe-7183-9e5a-1a0163c90d51/lansdowne-green-window-replacement)[Southern Housing](https://tendernation.io/buyers/southern-housing) Value not counted: framework or estimated ceiling 24 Mar 2025 - [Gravesham Borough Council Windows & Doors DPS Tender](https://tendernation.io/opportunities/01a13ce7-5c2e-729e-a4d2-486bb2c26468/gravesham-borough-council-windows-doors-dps-tender)[South East Consortium](https://tendernation.io/buyers/south-east-consortium) Value not counted: framework or estimated ceiling 20 May 2024 - [Gravesham Borough Council Windows & Doors DPS Tender](https://tendernation.io/opportunities/01a13bac-9d1d-7349-accf-19751e604ac1/gravesham-borough-council-windows-doors-dps-tender)[South East Consortium](https://tendernation.io/buyers/south-east-consortium) Value not counted: framework or estimated ceiling 20 May 2024 - [Replacement Windows and Doors at Kestrel Court](https://tendernation.io/opportunities/01a13c73-0a66-70a8-9913-7a86c9e37587/replacement-windows-and-doors-at-kestrel-court)[Optivo](https://tendernation.io/buyers/optivo) £121,487 11 Mar 2021 - [Replacement Windows, Doors, Fascia, Soffits & Rain Water Goods at Phoenix Court](https://tendernation.io/opportunities/01a13c66-9708-7083-b0d7-48405c8a7e80/replacement-windows-doors-fascia-soffits-rain-water-goods-at-phoenix-court)[Optivo](https://tendernation.io/buyers/optivo) £99,998 19 Dec 2019 - [Lewes Court Window Replacement and Associated Works](https://tendernation.io/opportunities/01a13c3f-a5ce-7172-9fa7-c5242488ff4a/lewes-court-window-replacement-and-associated-works)[Optivo](https://tendernation.io/buyers/optivo) £236,380 16 Aug 2018 - [Window and Door Replacement](https://tendernation.io/opportunities/01a13c2b-0d53-71f0-9b03-d3147b300bbb/window-and-door-replacement)[Optivo](https://tendernation.io/buyers/optivo) £10,000,000 1 Jun 2018 - [Renewal of flat entrance doors with FD60 door set](https://tendernation.io/opportunities/01a13bfc-41a1-703e-a9c7-f85ff3cff0c9/renewal-of-flat-entrance-doors-with-fd60-door-set)[Ashford Borough Council](https://tendernation.io/buyers/ashford-borough-council) £91,394 22 Jul 2016 - [Hampshire's Building Minor Works Framework.](http://ted.europa.eu/udl?uri=TED:NOTICE:333738-2017:TEXT:EN:HTML)[Reading Borough Council](https://tendernation.io/buyers/reading-borough-council) Value not counted: framework or estimated ceiling 28 May 2016 - [Internal & External Building Works Framework.](http://ted.europa.eu/udl?uri=TED:NOTICE:044192-2016:TEXT:EN:HTML)[Current and future members of the South East Consortium](https://tendernation.io/buyers/current-and-future-members-of-the-south-east-consortium) Value not counted: framework or estimated ceiling 9 Feb 2016 - [Internal & External Building Works Framework](https://tendernation.io/opportunities/01a13bf4-25fd-71c9-9716-ccf525b37c38/internal-external-building-works-framework)[South East Consortium](https://tendernation.io/buyers/south-east-consortium) Value not counted: framework or estimated ceiling 23 Nov 2015 ## Companies House StatusActive Incorporated1 Aug 2000 (26 yrs) AccountsTotal exemption full IndustryOther service activities n.e.c. [View filing history](https://find-and-update.company-information.service.gov.uk/company/04044256)## Who they win from - [Optivo4 wins](https://tendernation.io/buyers/optivo) - [Southern Housing4 wins](https://tendernation.io/buyers/southern-housing) - [South East Consortium3 wins](https://tendernation.io/buyers/south-east-consortium) - [Barnet Homes Ltd1 win](https://tendernation.io/buyers/barnet-homes-ltd) - [Ashford Borough Council1 win](https://tendernation.io/buyers/ashford-borough-council) - [Reading Borough Council1 win](https://tendernation.io/buyers/reading-borough-council) - [Current and future members of the South East Consortium1 win](https://tendernation.io/buyers/current-and-future-members-of-the-south-east-consortium) ## Latest accounts Net assets£2,089,514 Cash£675,525 Employees16 Year to 31 Mar 2025, from accounts filed at Companies House. ## Bids named on award notices Bid for 2 contracts: won 2, lost 0. Award notices have listed every bidder only since the Procurement Act (February 2025). ## Paid by (last 12 months) - [Gravesham Borough Council](https://tendernation.io/buyers/gravesham-borough-council)£736,180 From councils' published spending over £500. ## What they win - [Construction work](https://tendernation.io/sectors/construction-work)11 - [Construction materials & structures](https://tendernation.io/sectors/construction-materials)3 Competing with Cosyseal (Double Glazing) Limited? TenderNation shows who wins each buyer's work, flags contracts coming up for renewal and emails you new tenders that fit. Free plan available. [All buyers](/buyers)[Start free ](/register) 14-day free trial, no card required