- Companies
- Electricians
- Poole
- Kelvin & Watt Ltd
Kelvin & Watt Ltd
- Company number
- 13171656
- Incorporated
- 1 Feb 20215 years trading
- Registered office
- James House, 40 Lagland Street, Poole, BH15 1QG
- Nature of business
- Electrical installation
Kelvin & Watt Ltd is a 5-year-old private limited company registered in Poole, company number 13171656, one of 136 electrical contractors in Poole. Its next accounts are due at Companies House on 30 December 2026, and the CT600 for the period to 30 March 2026 is due at HMRC on 30 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 £20K (+10.2%) on the year before, to £218K.
- Net assets rose in 4 of 4 year-on-year comparisons on record.
- Current assets of £246K against £91K owed within a year: 2.7 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 | £218K | £172K | £246K | £91K | 2 |
| 31 Mar 2024 | £198K | £160K | £250K | £98K | 1 |
| 31 Mar 2023 | £74K | £144K | £191K | £122K | 1 |
| 31 Mar 2022 | £41K | £137K | £174K | £135K | 1 |
| 31 Mar 2021 | £10 | £10 |
Where Kelvin & Watt Ltd is registered
The registered office is in Poole (BH15), in the Bournemouth, Christchurch and Poole local authority area, South West. Show BH15 1QG on a map.
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- Pro-House Builders & Decorators LtdBuilders
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Also registered at this address
5 other companies use the same registered office as Kelvin & Watt Ltd.
- JS & DH Trading LimitedSpecialist contractors
- LSPC Design & Build LimitedSpecialist contractors
- Peter Newman Flooring LimitedFloor and wall tilers
- Tarka Enterprises LtdProperty developers
- W.R.E. Andrews & Son LimitedBuilders
What happens if Kelvin & Watt Ltd 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 30 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 Dec 2026 to 30 Jan 2027 | £150 |
| 1 to 3 months late | 31 Jan 2027 to 30 Mar 2027 | £375 |
| 3 to 6 months late | 31 Mar 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 | 31 Mar 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 | 30 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
- 13171656
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 1 February 2021 (5 years ago)
- Registered office
- James House, 40 Lagland Street, Poole, BH15 1QG
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 30 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 31 January 2026
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Poole
Other active electrical contractors registered in Poole.
- Kreo Limited2005
- Kwe Contractors Limited2025
- Let Electrical Limited2022
- Lightning Electrics Limited2007
- Lilliput Electrical Limited2013
- Living Home Tech Limited2014
- Lno Group Ltd2020
- M W Hoy Electrical Limited2017
All electrical contractors in Poole · All trades in Poole · Electricians across the UK
Frequently asked questions
When are Kelvin & Watt Ltd's accounts due?
Kelvin & Watt Ltd's next accounts are due at Companies House by 30 December 2026 (in 78 days), covering the period to 30 March 2026.
When is Kelvin & Watt Ltd's CT600 due?
The CT600 for the period to 30 March 2026 is due at HMRC by 30 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 December 2026.
Is Kelvin & Watt Ltd still trading?
Kelvin & Watt Ltd 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 Kelvin & Watt Ltd do?
Kelvin & Watt Ltd is registered under Electrical installation (SIC 43210).
How old is Kelvin & Watt Ltd?
Kelvin & Watt Ltd was incorporated on 1 February 2021, 5 years ago.
What is the penalty if Kelvin & Watt Ltd 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 Kelvin & Watt Ltd 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.