- Companies
- Specialist contractors
- Swanley
- Parallel Mechanical Services Limited
Parallel Mechanical Services Limited
- Company number
- 17129008
- Incorporated
- 31 Mar 2026
- Registered office
- The Old Barn, Wood Street, Swanley, BR8 7PA
- Nature of business
- Other specialised construction activities n.e.c.
Parallel Mechanical Services Limited is a newly incorporated private limited company registered in Swanley, company number 17129008, one of 69 specialist construction companies in Swanley. Its next accounts are due at Companies House on 31 December 2027, and its first CT600 is due at HMRC on 30 March 2028.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Parallel Mechanical Services Limited is registered
The registered office is in Swanley (BR8), in the Sevenoaks local authority area, South East. Show BR8 7PA on a map.
Other trade companies in BR8
- S.P.M (South East) LtdPlumbers and heating engineers
- Omnidrive Motors LtdMotor traders
- Epx Resins LtdFloor and wall tilers
- SLC Contractors Ltd LtdBuilders
- Build and Beyond CX Consulting LimitedFinishing trades
- Roostanproperty LtdProperty developers
- HL Contract Cleaning Services LtdMechanics and garages
- Fasteasycar LtdMotor traders
Shared registered office
264 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 Parallel Mechanical Services 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
- 17129008
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 March 2026
- Registered office
- The Old Barn, Wood Street, Swanley, BR8 7PA
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- No accounts filed yet
- Previous names
- Parallal Mechanical Services Limited (until 8 Apr 2026)
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 Swanley
Other active specialist construction companies registered in Swanley.
- Peakline Access Group Limited2026
- Pike & Chapman Limited2020
- Proclaim Construction and Waterproofing Limited2025
- R Coleman Construction Limited2023
- Rosebern Construction Limited2026
- Ruan Limited2007
- S W Drywall Limited2011
- SJT Contractors South East Limited2021
All specialist construction companies in Swanley · All trades in Swanley · Specialist contractors across the UK
Frequently asked questions
When are Parallel Mechanical Services Limited's accounts due?
Parallel Mechanical Services 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 Parallel Mechanical Services Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 30 March 2027, due by 30 March 2028, and one for the period to 31 March 2027, due by 31 March 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Parallel Mechanical Services Limited still trading?
Parallel Mechanical Services 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 Parallel Mechanical Services Limited do?
Parallel Mechanical Services Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Parallel Mechanical Services Limited?
Parallel Mechanical Services Limited was incorporated on 31 March 2026, less than a year ago.
What is the penalty if Parallel Mechanical Services 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 Parallel Mechanical Services 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.