- Companies
- Plumbers and heating engineers
- Castle Cary
- 21 Degrees C Limited
21 Degrees C Limited
- Company number
- 05934066
- Incorporated
- 13 Sep 200620 years trading
- Registered office
- The Offices, The Horsepond Courtyard, Castle Cary, Somerset, BA7 7BD
- Nature of business
- Plumbing, heat and air-conditioning installation
21 Degrees C Limited is a 20-year-old private limited company registered in Castle Cary, company number 05934066, one of 7 plumbing and heating companies in Castle Cary. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for 21 Degrees C LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £2,251 (+53.3%) on the year before, to £6,471.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £13K against £7,701 owed within a year: 1.6 times cover.
- 2 employees on average, up from 1 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £6,471 | £3,636 | £13K | £7,701 | 2 |
| 31 Mar 2024 | £4,220 | £4,005 | £9,430 | £7,005 | 1 |
| 31 Mar 2023 | £10K | £4,944 | £19K | £12K | 1 |
| 31 Mar 2022 | £13K | £15K | £23K | £13K | 1 |
| 31 Mar 2021 | £8,015 | £11K | £14K | £11K | 1 |
Where 21 Degrees C Limited is registered
The registered office is in Castle Cary (BA7), in the Somerset local authority area, South West. Show BA7 7BD on a map.
Other trade companies in BA7
- Mark Curtis Roofing and Building South West LtdBuilders
- Aviation Maintenance Group LtdMachinery repair and installation
- Tribal Auto LtdMotor traders
- H&J Motors LtdMotor traders
- Ribfix LtdMachinery repair and installation
- S W Building & Renovations LtdBuilders
- Nmjaero LtdMachinery repair and installation
- Room4UK LtdBuilders
Also registered at this address
8 other companies use the same registered office as 21 Degrees C Limited.
- Cary Motor Services LimitedMachinery repair and installation
- Controlled Climate LimitedInstallers
- Greenman Solutions LtdLandscapers and gardeners
- Hutchins Electrical Contractors LimitedElectricians
- Mainstones Electrical LimitedElectricians
- Rob Trevis LimitedPlasterers
- S W Ollis LimitedMotor traders
- Somerton Windows LtdFinishing trades
What happens if 21 Degrees C Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 05934066
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 13 September 2006 (20 years ago)
- Registered office
- The Offices, The Horsepond Courtyard, Castle Cary, Somerset, BA7 7BD
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 13 September 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Castle Cary
Other active plumbing and heating companies registered in Castle Cary.
- Bart Mechanical Services Limited2007
- Gbheatingtech Ltd2022
- Kevan Davis Plumbing & Heating Ltd2006
- Mark Ferrett Plumbing and Heating Ltd2015
- MCH Installations Limited2006
- Simon Messenger Plumbing & Heating Ltd2013
All plumbing and heating companies in Castle Cary · All trades in Castle Cary · Plumbers and heating engineers across the UK
Frequently asked questions
When are 21 Degrees C Limited's accounts due?
21 Degrees C Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is 21 Degrees C Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is 21 Degrees C Limited still trading?
21 Degrees C Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does 21 Degrees C Limited do?
21 Degrees C Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is 21 Degrees C Limited?
21 Degrees C Limited was incorporated on 13 September 2006, 20 years ago.
What is the penalty if 21 Degrees C Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View 21 Degrees C Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.