Source: https://tendernation.io/suppliers/gso-t-a-reef-cleaning-solutions [Skip to main content](#main-content) Supplier profile # GSO Ltd t/a Reef Cleaning Solutions Public sector contracts won, from published award notices SME[Companies House 08355246](https://find-and-update.company-information.service.gov.uk/company/08355246) [ Follow competitor](/login "Sign in to follow competitors")[ Compete for this work](/register) Contracts won 29 since 3 Feb 2019 Total awarded £32,853,079 where values were published Buyers 20 public bodies Latest win 22 May 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. - [South Lincolnshire Academies Trust ~ Cleaning Services Tender](https://tendernation.io/opportunities/01a13ca4-9a21-7317-a243-83107a041e48/south-lincolnshire-academies-trust-cleaning-services-tender)[South Lincolnshire Academies Trust](https://tendernation.io/buyers/south-lincolnshire-academies-trust) £2,046,000 Ends 31 Mar 2027 - [South Lincolnshire Academies Trust ~ Cleaning Services Tender](https://tendernation.io/opportunities/01a13b8b-ec0f-7181-a334-4bdf8df4db81/south-lincolnshire-academies-trust-cleaning-services-tender)[South Lincolnshire Academies Trust](https://tendernation.io/buyers/south-lincolnshire-academies-trust) £1,768,770 Ends 31 Mar 2027 - [Aylesford School ~ Cleaning Tender](https://tendernation.io/opportunities/01a13c87-a243-73d8-821d-0fa5b09411bc/aylesford-school-cleaning-tender)[Aylesford School and Sixth Form College](https://tendernation.io/buyers/aylesford-school-and-sixth-form-college) £490,000 Ends 31 Jul 2027 - [Aylesford School ~ Cleaning Tender](https://tendernation.io/opportunities/01a13b8b-681e-7229-9fd2-9370191e4e30/aylesford-school-cleaning-tender)[Aylesford School and Sixth Form College](https://tendernation.io/buyers/aylesford-school-and-sixth-form-college) £750,840 Ends 31 Jul 2027 - [Chelsea Academy~ Cleaning Tender](https://tendernation.io/opportunities/01a13ceb-a718-73a5-9bff-ddd212359fff/chelsea-academy-cleaning-tender)[Chelsea Academy](https://tendernation.io/buyers/chelsea-academy) £732,618 Ends 31 Aug 2027 - [The Willink School ~ Cleaning Tender](https://tendernation.io/opportunities/01a13ce0-c805-70e4-aa45-92c5f6490fd0/the-willink-school-cleaning-tender)[The Willink School](https://tendernation.io/buyers/the-willink-school) £572,320 Ends 31 Aug 2027 - [The Willink School ~ Cleaning Tender](https://tendernation.io/opportunities/01a13ba6-8288-728b-b5df-25022272652b/the-willink-school-cleaning-tender)[The Willink School](https://tendernation.io/buyers/the-willink-school) £572,320 Ends 31 Aug 2027 ## Recent contract awards - [Robin Hood Multi Academy Trust - Cleaning Services Tender](https://tendernation.io/opportunities/01a13bcf-af23-716f-a723-ef0522ce80d1/robin-hood-multi-academy-trust-cleaning-services-tender)[Robin Hood Multi Academy Trust](https://tendernation.io/buyers/robin-hood-multi-academy-trust) £645,000 22 May 2026 - [The CAM Academy Trust - Cleaning Services Tender](https://tendernation.io/opportunities/01a13bd0-d751-7055-815a-f1d3eba8b4b8/the-cam-academy-trust-cleaning-services-tender)[The CAM Academy Trust](https://tendernation.io/buyers/the-cam-academy-trust) £2,299,620 12 May 2026 - [Bishop Vesey’s Grammar School ~ Cleaning Tender](https://tendernation.io/opportunities/01a13bce-108f-736f-b38a-db42511ae1ea/bishop-veseys-grammar-school-cleaning-tender)[Bishop Vesey's Grammar School](https://tendernation.io/buyers/bishop-veseys-grammar-school) £1,230,000 23 Feb 2026 - [Joseph Chamberlain Sixth Form College ~ Cleaning Tender](https://tendernation.io/opportunities/01a13bce-12dc-73b9-9604-f32f35ffeb4b/joseph-chamberlain-sixth-form-college-cleaning-tender)[Joseph Chamberlain Sixth Form College](https://tendernation.io/buyers/joseph-chamberlain-sixth-form-college) £1,908,000 13 Feb 2026 - [Ambition Education Trust ~ Cleaning Tender](https://tendernation.io/opportunities/01a13bce-18fa-7212-9ffe-9c64bf558720/ambition-education-trust-cleaning-tender)[Ambition Education Trust](https://tendernation.io/buyers/ambition-education-trust) £3,500,000 19 Dec 2025 - [All Saints Catholic College ~ Cleaning Tender](https://tendernation.io/opportunities/01a13bb8-d725-7338-b3e6-e93e79292d1a/all-saints-catholic-college-cleaning-tender)[All Saints Catholic College](https://tendernation.io/buyers/all-saints-catholic-college) £310,464 22 Oct 2025 - [ACES Academies Trust ~ Cleaning Tender](https://tendernation.io/opportunities/01a13d0b-f116-72e8-b003-bb9c1194dc11/aces-academies-trust-cleaning-tender)[Aces Academies Trust](https://tendernation.io/buyers/aces-academies-trust) £2,445,474 12 Jun 2025 - [Holy Cross Catholic Multi Academy Company - Cleaning Services Tender](https://tendernation.io/opportunities/01a13bb3-425d-730f-850c-57c54bc0ecb4/holy-cross-catholic-multi-academy-company-cleaning-services-tender)[Holy Cross Catholic Multi Academy Company](https://tendernation.io/buyers/holy-cross-catholic-multi-academy-company) £2,533,500 11 Jun 2025 - [Holy Cross Catholic Multi Academy Company - Cleaning Services Tender](https://tendernation.io/opportunities/01a13d0b-7a5d-708a-93f3-ae1a4e6e34dd/holy-cross-catholic-multi-academy-company-cleaning-services-tender)[Holy Cross Catholic Multi Academy Company](https://tendernation.io/buyers/holy-cross-catholic-multi-academy-company) £2,533,500 11 Jun 2025 - [St Thomas More Catholic School & Sixth Form (Holy Spirit Catholic Multi Academy) ~ Cleaning Tender](https://tendernation.io/opportunities/01a13d13-4319-7037-95f7-1261a667b9bc/st-thomas-more-catholic-school-sixth-form-holy-spirit-catholic-multi-academy)[St Thomas More Catholic Academy & Sixth Form College](https://tendernation.io/buyers/st-thomas-more-catholic-academy-sixth-form-college) £955,558 5 Jun 2025 - [Chelsea Academy~ Cleaning Tender](https://tendernation.io/opportunities/01a13ceb-a718-73a5-9bff-ddd212359fff/chelsea-academy-cleaning-tender)[Chelsea Academy](https://tendernation.io/buyers/chelsea-academy) £732,618 12 Jun 2024 - [Chelsea Academy~ Cleaning Tender](https://tendernation.io/opportunities/01a13ba5-3b9d-731b-a971-3cff89d2b5e8/chelsea-academy-cleaning-tender)[Chelsea Academy](https://tendernation.io/buyers/chelsea-academy) £732,318 12 Jun 2024 - [The Willink School ~ Cleaning Tender](https://tendernation.io/opportunities/01a13ce0-c805-70e4-aa45-92c5f6490fd0/the-willink-school-cleaning-tender)[The Willink School](https://tendernation.io/buyers/the-willink-school) £572,320 23 May 2024 - [The Willink School ~ Cleaning Tender](https://tendernation.io/opportunities/01a13ba6-8288-728b-b5df-25022272652b/the-willink-school-cleaning-tender)[The Willink School](https://tendernation.io/buyers/the-willink-school) £572,320 23 May 2024 - [The CAM Academy Trust - Cleaning Services Tender](https://tendernation.io/opportunities/01a13cd5-d653-70a0-a926-fbe40e09e458/the-cam-academy-trust-cleaning-services-tender)[The CAM Academy Trust](https://tendernation.io/buyers/the-cam-academy-trust) £703,000 27 Feb 2024 ## Companies House StatusActive Incorporated10 Jan 2013 (13 yrs) AccountsTotal exemption full IndustryOther cleaning services [View filing history](https://find-and-update.company-information.service.gov.uk/company/08355246)## Who they win from - [The Litmus Partnership Ltd3 wins](https://tendernation.io/buyers/the-litmus-partnership-ltd) - [Holy Cross Catholic Multi Academy Company2 wins](https://tendernation.io/buyers/holy-cross-catholic-multi-academy-company) - [South Lincolnshire Academies Trust2 wins](https://tendernation.io/buyers/south-lincolnshire-academies-trust) - [The CAM Academy Trust2 wins](https://tendernation.io/buyers/the-cam-academy-trust) - [Chelsea Academy2 wins](https://tendernation.io/buyers/chelsea-academy) - [Unity Schools Trust2 wins](https://tendernation.io/buyers/unity-schools-trust) - [Aylesford School and Sixth Form College2 wins](https://tendernation.io/buyers/aylesford-school-and-sixth-form-college) - [The Willink School2 wins](https://tendernation.io/buyers/the-willink-school) ## Latest accounts Net assets£1,229,758 Cash£1,524,143 Employees745 Year to 31 Mar 2026, from accounts filed at Companies House. ## Bids named on award notices Bid for 4 contracts: won 3, lost 1. - [Lost: SCHOLARS' EDUCATION TRUST](https://tendernation.io/opportunities/01a13bcf-ddf8-7290-a087-ce9d3ae5d4da)22 Apr 2026 Award notices have listed every bidder only since the Procurement Act (February 2025). ## What they win - [Sewage, refuse, cleaning & environmental](https://tendernation.io/sectors/sewage-refuse-cleaning-environmental)29 Competing with GSO Ltd t/a Reef Cleaning Solutions? 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