# SASH WINDOW INSULATION LIMITED (15839258)

> SASH WINDOW INSULATION LIMITED is an active private limited company (company number 15839258) incorporated on 15 July 2024, registered in London. Its registered activity is joinery installation (SIC 43320). Latest micro accounts cover the period ending 31 July 2025, showing net assets of £10k, with 1 employee on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public.

- Status: Active
- Incorporated: 2024-07-15
- Registered office: London, EC1V 2NX
- SIC 43320: Joinery installation
- SIC 43342: Glazing
- SIC 61900: Other telecommunications activities
- SIC 82990: Other business support service activities n.e.c.
- Next accounts due: 2027-04-30
- Confirmation statement due: 2027-07-29
- Accounts type: MICRO ENTITY

By net assets it sits in the upper half of 555 comparable companies in London (median £5,675, upper quartile £29k).

## Accounts (as filed)

| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 2025-07-31 | £10k | — | — | £5,689 | — | — | 1 |

current ratio 0.83; size band micro.

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

- Net assets above zero: Net assets £10,062 at 31 July 2025
- Current assets below creditors within one year: Current ratio 0.83
- Incorporated two to five years ago: Incorporated 15 July 2024

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

## Persons with significant control

- Mr Paul Doyne-Ditmas — owns 75–100% of shares; holds 75–100% of voting rights; can appoint or remove directors, since 2024-07-15

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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/15839258
HTML: https://firmoscan.com/company/15839258-sash-window-insulation-limited