# TANTALLON SYSTEMS LTD. (SC219473)

> TANTALLON SYSTEMS LTD. is an active private limited company (company number SC219473) incorporated on 23 May 2001, registered in Longniddry. Its registered activity is manufacture of electronic industrial process control equipment (SIC 26512). Latest micro accounts cover the period ending 31 May 2025, showing net assets of −£791k, with 0 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets were unchanged on the prior period.

- Status: Active
- Incorporated: 2001-05-23
- Registered office: Longniddry, EH32 0NN
- SIC 26512: Manufacture of electronic industrial process control equipment
- SIC 62012: Business and domestic software development
- SIC 62030: Computer facilities management activities
- SIC 71121: Engineering design activities for industrial process and production
- Next accounts due: 2027-02-28
- Confirmation statement due: 2027-06-06
- Accounts type: MICRO ENTITY

By net assets it sits in the bottom quarter of 667 comparable companies in the UK (median £35k, upper quartile £408k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2025-05-31 | −£791k | — | — | £791k | — | — | 0 |
| 2024-05-31 | −£790k | — | — | £789k | — | — | — |

current ratio 0; size band micro.

## Filing and accounts signals (facts, not a rating)

- Net assets below zero: Net assets £-791,481 at 31 May 2025
- Current assets below creditors within one year: Current ratio 0.0
- Incorporated five or more years ago: Incorporated 23 May 2001

How each signal is derived: https://firmoscan.com/methodology

## Persons with significant control

- Mr Martin Eric Jones — owns 25–50% of shares, since 2016-04-06
- Mrs Fiona Ann Jones — owns 25–50% of shares, since 2016-04-06

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Source: Companies House register snapshot 2026-08-31, Open Government Licence v3.0. Information may have changed since that date and is not advice or a credit reference; check the official record before relying on it. Official record: https://find-and-update.company-information.service.gov.uk/company/SC219473
HTML: https://firmoscan.com/company/SC219473-tantallon-systems-ltd