Siltbuster Limited: UK Public Sector Contracts Won & Awards
Large organisation·Monmouth·Wales (Cymru)·Main market: Miscellaneous special-purpose machinery
Companies House04737424 ↗
Procedures with an award44 award recordsPublic authorities3named on published awardsAttributable award value£2.3mnet · on 2 of 4 award records · single-supplier, no ceilingsLast 12 months2awards · 0 in the prior 24 months · last 11 Sept 2026Delivery regions10most often Nationwide (UK)
Where they win
4 lot-level observations (3 awarded lots, 75%, plus 1 envelope awards without lot links; pending awards included) · top CPV classes
4299 Miscellaneous special-purpose machinery2 observations · 50% · lots4291 Distilling, filtering or rectifying apparatus1 observations · 25% · lots7130 Engineering services1 observations · 25% · envelope awardsAttributable award value£2.3mSum of published VAT-exclusive values on 2 of 4 award records — only awards to this supplier alone, framework / DPS ceilings excluded; the award’s own value, else its contract’s; the five largest make 100%; a further 1 published a VAT-inclusive amount only (£1.6m inc. VAT, kept apart). Not turnover. Largest rows below.
Award vs estimate38.6% above estimateindicative · n=1Median (estimate − award) / estimate on comparable contested single-supplier GBP wins, per lot, same VAT basis on both sides, scoped to CPV division 42. Negative = awarded above estimate. Historical movement, not a bid instruction.
| Largest published awards | Authority | Awarded | Term | Published value |
|---|---|---|---|---|
| PRO004930-Goods-Contract-MBBR 65 Units (Addendum) | United Utilities Water Limited | 29 Sept 2025 | 11 mo | £1,800,000 |
| RFP0001-Goods-Contract-Supply, Delivery & Installation of Biological Treatment Equipment | United Utilities Water Limited | 15 Jan 2026 | 1 yrs | £485,000 ≈ £485k/yr |
Where they deliver
ITL1 delivery regions on the notice · 3 of 4 awarded procedures publish one · a procedure with several regions counts in each
Nationwide (UK)3 procedures · 100%
North West England2 procedures · 67%
North East England1 procedures · 33%
Yorkshire and the Humber1 procedures · 33%
East Midlands1 procedures · 33%
West Midlands1 procedures · 33%
South East England1 procedures · 33%
South West England1 procedures · 33%
Who they sell to
Authorities named on this supplier’s published awards · ranked by distinct procedures · award records explode on framework and DPS panels
Authority type · official UK type when published, else name/id class, else not classified · by award records (a single panel can dominate)
- Other public body 75% (3 awards)
- Type not classified 25% (1 awards)
| Authority | Procedures | Share | Award records | Last activity |
|---|---|---|---|---|
| United Utilities Water Limited | 2 | 50% | 2 | 15 Jan 2026 |
| Southern Water Services Limited | 1 | 25% | 1 | 11 Sept 2026 |
| The Coal Authority | 1 | 25% | 1 | 15 Sept 2022 |
Share = of the 4 procedures with an award naming this supplier. Last activity = award date, or notice publication when no award date was published.
Recent awards
Latest 4 of 4 award records naming this supplier
| Award / procedure | Authority | Awarded | Award value |
|---|---|---|---|
| RFP0001-Goods-Contract-Supply, Delivery & Installation of Biological Treatment Equipment | United Utilities Water Limited | 15 Jan 2026 | £485,000 |
| PRO004930-Goods-Contract-MBBR 65 Units (Addendum) | United Utilities Water Limited | 29 Sept 2025 | £1,800,000 |
| Hire of primary treatment equipment (lamella) | Southern Water Services Limited | Not published | £1,620,000 |
| Engineering Services Framework | The Coal Authority | Not published | Not published |
Data coverage & method
- Source: Find a Tender OCDS award and contract releases. An award record is one award × this supplier; a procedure can carry many (panels, call-offs).
- Market observations are awarded lots, or one envelope award when the notice publishes no lot links. Region = delivery ITL1 on the notice, not the supplier’s registered address.
- Authority type: official OCDS UK contracting-authority type when the notice publishes one; otherwise a Tenderline name/id class; otherwise “not classified”. Purchasing hubs with no published type stay unclassified.
- Published value attributable to this supplier alone: £2.3m across single-supplier awards, framework / DPS ceilings excluded. Coverage is partial and the figure is not turnover, so it is not shown as a headline.
- Contract end dates: published on 0 of 4 awards; 0 end within 18 months.
- Award vs estimate tiers: robust ≥5, moderate 3–4, indicative 1–2 comparable pairs.
- Never shown: contact details, reliability or payment scores, affiliations, predicted wins.
Identifiers consolidated into this page (1 historical Find a Tender publication identifier)
Official notices referenced this supplier under these publication identifiers. Alias URLs are not separate pages.
Canonical page id: GB-COH:04737424