- Companies
- Specialist contractors
- Birmingham
- Lock Environmental Limited
Lock Environmental Limited
- Company number
- 08787083
- Incorporated
- 22 Nov 201312 years trading
- Registered office
- 13 Portland Road, Birmingham, B16 9HN
- Nature of business
- Other specialised construction activities n.e.c.
Lock Environmental Limited is a 12-year-old private limited company registered in Birmingham, company number 08787083, one of 442 specialist construction companies in Birmingham. Its next accounts are due at Companies House on 31 August 2027, and the CT600 for the period to 30 November 2026 is due at HMRC on 30 November 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 down £390 (-40.4%) on the year before, to £575.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £51K against £55K owed within a year: 0.9 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Nov 2025 | £575 | £35 | £51K | £55K | 0 |
| 30 Nov 2024 | £965 | £6,250 | £34K | £38K | 2 |
| 30 Nov 2023 | £348 | £39 | £19K | £25K | 2 |
| 30 Nov 2022 | -£132 | £822 | £25K | £22K | 2 |
| 30 Nov 2021 | -£1,610 | £374 | £12K | £8,655 | 2 |
| 30 Nov 2020 | £20 | £2,977 | £16K | £16K | 2 |
| 30 Nov 2019 | £100 | £609 | £6,806 | £6,706 | 2 |
| 30 Nov 2018 | -£595 | £2,145 | £4,425 | £5,020 | 2 |
| 30 Nov 2017 | £126 | £925 | £5,033 | £4,907 | 2 |
| 30 Nov 2016 | £1 |
Where Lock Environmental Limited is registered
The registered office is in Birmingham (B16), in the Birmingham local authority area, West Midlands. Show B16 9HN on a map.
Other trade companies in B16
- MD Modern Tiles LtdFinishing trades
- Landkite LtdProperty developers
- Goldspire Property Holdings LtdProperty developers
- Ahpbala Construction LtdPlasterers
- Priority One Maintenance LtdPlasterers
- Doxservice LtdPlasterers
- Midwest Interior Solutions LtdFinishing trades
- Boost Automotive LimitedMotor traders
Also registered at this address
12 other companies use the same registered office as Lock Environmental Limited.
- Cityfire&Electrical Services LtdElectricians
- Congreve Roofing LimitedRoofers
- Coxhill Properties LimitedProperty developers
- Farrelly Energy Solutions LimitedSpecialist contractors
- J S Prestige Auto Services LimitedMechanics and garages
- Kitchen Door Hub LtdJoiners and carpenters
- Landkite LtdProperty developers
- Lark & Larks LtdSpecialist contractors
- R R & B Garages LimitedMechanics and garages
- Rite-Fix LimitedSpecialist contractors
- Structured Cabling Services LimitedElectricians
- Universal Imports (UK) LtdMotor traders
What happens if Lock Environmental 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 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Sep 2027 to 30 Sep 2027 | £150 |
| 1 to 3 months late | 1 Oct 2027 to 30 Nov 2027 | £375 |
| 3 to 6 months late | 1 Dec 2027 to 29 Feb 2028 | £750 |
| More than 6 months late | From 1 Mar 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Dec 2027 | £200 |
| 3 months late | 29 Feb 2028 | another £200 |
| 6 months late | 30 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Nov 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
- 08787083
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 November 2013 (12 years ago)
- Registered office
- 13 Portland Road, Birmingham, B16 9HN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 November (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 November 2025
- Last confirmation statement
- 11 September 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Birmingham
Other active specialist construction companies registered in Birmingham.
- Lockwell Investments Ltd2021
- Lombard House Developments Ltd2015
- Long Tidings Ltd2025
- Lord Noble Company Limited2023
- Love Shutters Interiors UK Limited2013
- Loyal Gardening and Jet Washing Limited2022
- Lucky 58 Limited2024
- M W Jenkins Plant Hire & Groundworks Limited2015
All specialist construction companies in Birmingham · All trades in Birmingham · Specialist contractors across the UK
Frequently asked questions
When are Lock Environmental Limited's accounts due?
Lock Environmental Limited's next accounts are due at Companies House by 31 August 2027 (in 322 days), covering the period to 30 November 2026.
When is Lock Environmental Limited's CT600 due?
The CT600 for the period to 30 November 2026 is due at HMRC by 30 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 September 2027.
Is Lock Environmental Limited still trading?
Lock Environmental Limited is listed as active on the Companies House register (checked 13 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 Lock Environmental Limited do?
Lock Environmental Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Lock Environmental Limited?
Lock Environmental Limited was incorporated on 22 November 2013, 12 years ago.
What is the penalty if Lock Environmental 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 Lock Environmental Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.