- Companies
- Electricians
- Lincoln
- Brook & Mayo Limited
Brook & Mayo Limited
- Company number
- 04625674
- Incorporated
- 30 Dec 200223 years trading
- Registered office
- 15 Newland, Lincoln, Lincolnshire, LN1 1XG
- Nature of business
- Electrical installation
Brook & Mayo Limited is a 23-year-old private limited company registered in Lincoln, company number 04625674, one of 114 electrical contractors in Lincoln. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
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 £213K (+8.7%) on the year before, to £2.7M.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- Current assets of £2.7M against £1.1M owed within a year: 2.6 times cover.
- 46 employees on average, up from 44 the year before.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £2.7M | £1.4M | £2.7M | £1.1M | 46 |
| 31 Mar 2025 | £2.5M | £789K | £2.3M | £866K | 44 |
| 31 Mar 2024 | £2.2M | £1M | £2.4M | £1.2M | 45 |
| 31 Mar 2023 | £2M | £806K | £2.3M | £915K | 43 |
| 31 Mar 2022 | £1.9M | £856K | £2.2M | £783K | 45 |
| 31 Mar 2021 | £1.8M | £420K | £2.4M | £1M | 49 |
| 31 Mar 2020 | £1.7M | £410K | £2.3M | £976K | 59 |
| 31 Mar 2019 | £1.6M | £157K | £2M | £903K | 47 |
| 31 Mar 2018 | £1.5M | £334K | £2M | £963K | 48 |
| 31 Mar 2017 | £1.3M | £323K | £1.9M | £858K |
Public contracts won
Brook & Mayo Limited has 7 public sector contract awards on record; the ones with their own published value total £437K, from 2018 to 2026. Source: Contracts Finder and Find a Tender award notices. For 3 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Lincolnshire County Council3 awards
- North Lincolnshire Council2 awards
- United Lincolnshire Teaching Hospitals NHS Trust1 award
- United Lincolnshire Hospitals NHS Trust1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| United Lincolnshire Teaching Hospitals NHS Trust | Minor Works, Repairs and Refurbishment Framework | Ceiling, not shown | 1 Sep 2026 |
| North Lincolnshire Council | Quibell Park - Emergency Works Velodrome & Driveway | 15 Oct 2025 | |
| Lincolnshire County Council | Grimoldby Primary school | £33K | 18 Jul 2023 |
| Lincolnshire County Council | Deepings St James Community Primary School | £303K | 29 Jun 2023 |
| Lincolnshire County Council | Sustainability improvement projects Lincolnshire county council | £102K | 11 Oct 2022 |
| North Lincolnshire Council | North Lincolnshire Council - Construction & Highways Framework - Lots 5 - 7 and Lot 12 Repairs and Maintenance - General Building, Mechanical, Electrical and Roofing | Ceiling, not shown | 29 Mar 2019 |
| United Lincolnshire Hospitals NHS Trust | Refurbishment, Maintenance, Repairs & Minor Works | Ceiling, not shown | 27 Jun 2018 |
Where Brook & Mayo Limited is registered
The registered office is in Lincoln (LN1), in the Lincoln local authority area, East Midlands. Show LN1 1XG on a map.
Other trade companies in LN1
- Nuco Developments LimitedProperty developers
- Ag Home Developments LtdProperty developers
- Primore Cleaning Services LtdCleaning companies
- Wright Aviate LtdMachinery repair and installation
- Riverside Tyres LimitedMechanics and garages
- Queen Bee Pest Management LtdCleaning companies
- Rain & Root Landscaping & Construction LtdLandscapers and gardeners
- Moulds Fencing LimitedInstallers
Shared registered office
31 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Brook & Mayo 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 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | 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
- 04625674
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 30 December 2002 (23 years ago)
- Registered office
- 15 Newland, Lincoln, Lincolnshire, LN1 1XG
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 11 March 2026
- Charges (mortgages)
- 2 outstanding of 2 registered
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 Lincoln
Other active electrical contractors registered in Lincoln.
- Burley & Elsom Ltd2014
- C G Newell Ltd2014
- C.H.C Electrical Ltd2021
- Carlton Electrical Services Limited2007
- Cawdro Ltd2026
- CJ Electrical (Lincs) Ltd2023
- CNR Electrical Services Ltd2025
- Control Tech (Lincoln) Ltd2008
All electrical contractors in Lincoln · All trades in Lincoln · Electricians across the UK
Frequently asked questions
When are Brook & Mayo Limited's accounts due?
Brook & Mayo Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Brook & Mayo Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Brook & Mayo Limited still trading?
Brook & Mayo 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 Brook & Mayo Limited do?
Brook & Mayo Limited is registered under Electrical installation (SIC 43210).
How old is Brook & Mayo Limited?
Brook & Mayo Limited was incorporated on 30 December 2002, 23 years ago.
Has Brook & Mayo Limited won public sector contracts?
Yes. Brook & Mayo Limited has 7 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £437K), most recently from United Lincolnshire Teaching Hospitals NHS Trust.
What is the penalty if Brook & Mayo 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 Brook & Mayo 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.