# SEM Limited

## Details

- **Company number:** [00138006](https://find-and-update.company-information.service.gov.uk/company/00138006)
- **Status:** Active
- **Type:** Private Limited Company
- **Incorporated:** 17 Oct 1914
- **Registered office:** ONE HUNDRED HOUSE, BRUNEL WAY, DARTFORD, DA1 5TH
- **Nature of business:** [27110](/sic/27110) Manufacture of electric motors, generators and transformers
- **Corporate group:** [Westec Holding Company Limited](/group/17603) (3 companies)


## Previous names

- Small Electric Motors Limited (until 1 Jun 1988)




## Control

| Name | Nature of control | Notified | Ceased |
|---|---|---|---|
| Westec Holding Company Limited | ownership-of-shares-75-to-100-percent | 6 Apr 2016 |  |



## Accounts

| Year ended | Turnover | Net assets | Cash | Employees |
|---|---|---|---|---|
| 31 Dec 2025 | £20,142,074 | £31,303,807 | £7,334,970 | 1 |
| 31 Dec 2024 | £17,809,413 | £30,406,862 | £4,739,624 | 1 |
| 31 Dec 2023 | £19,528,350 | £34,291,715 | £2,037,001 | 137 |
| 31 Dec 2022 | - | - | £4,806,235 | 113 |
| 31 Dec 2021 | £16,428,667 | - | £10,687,197 | 133 |
| 31 Dec 2020 | £12,957,166 | - | £6,200,337 | 165 |
| 31 Dec 2019 | £18,426,514 | - | £3,652,193 | 206 |



## Owned by

SEM Limited → [Westec Holding Company Limited](/company/03871242)