SIC 81221 Section N — Administrative and Support Service Activities

Window cleaning services

5,151 active UK companies registered under this classification.

SIC Code 81221 (Window cleaning services) is a UK Standard Industrial Classification code used by Companies House to categorise business activities. Companies registered under this code operate in the Window cleaning services sector, which falls under Section N (Administrative and Support Service Activities) of the SIC 2007 framework. There are currently 5,151 active companies and 5,326 total registrations under this classification.

5,151 Active Companies
5,326 Total Registered
198 New in 2026
LONDON Top Location

Window cleaning services Companies

Showing 1–25 of 5,326 companies.

UR

"THE ULTIMATE REFLECTION LTD" LTD 16901011

● Active EASTBOURNE Est. 2025
TD

(DAWSON) T/A DIAMOND CLEAN LTD 09103886

● Active St. Neots Est. 2014
L

00SHINE LTD 16275627

● Active EASTBOURNE Est. 2025
WL

0151 WC LTD 14667305

● Active Liverpool Est. 2023
L

01ADANA LIMITED 14035130

● Active STAINES-UPON-THAMES Est. 2022
CU

1 CLEAN UP LTD 16372436

● Active BIRMINGHAM Est. 2025
CW

1ST CALL WINDOW CLEANING LTD 11738192

● Active ASHFORD Est. 2018
GW

1ST GLASS WINDOW CLEANING LTD 09175655

● Active Thatcham Est. 2014
CL

20/20 CLEANING LTD 06372909

● Active BOURNE Est. 2007
CS

20/20 CLEANING SERVICES LTD 16145527

● Active NORWICH Est. 2024
WC

20/20 WINDOW CLEANING LTD 16937625

● Active NORWICH Est. 2025
CL

22 CLEANING LIMITED 15893169

● Active OXFORD Est. 2024
HM

24/7 HOME & MAINTENANCE SOLUTIONS LTD 15427532

● Active LONDON Est. 2024
IC

24/7 IMMACULATE CLEANING LIMITED NI723060

● Active LISBURN Est. 2024
EC

247 EXTERIOR CLEANING LTD SC717823

● Active AYR Est. 2021
VL

24REMOVAL VANS LIMITED 16164866

● Active London Est. 2025
L

28T&N LTD 17050183

● Active NORWICH Est. 2026
L

2BUSY2CLEAN LIMITED 16123775

● Active London Est. 2024
SL

2J-TS SERVICES LTD 15668783

● Active Thornton Heath Est. 2024
SL

2M SERVICES LTD 15787111

● Active CARSHALTON Est. 2024
L

2POINTFIX LTD 16965211

● Active London Est. 2026
L

33BH LTD 15599273

● Active Northampton Est. 2024
L

3CYCLE LTD 12962890

● Active Beckenham Est. 2020
SL

3M SERVICES LTD 16028900

● Active Hayes Est. 2024
L

3WYZE LIMITED 16656643

● Active ERITH Est. 2025

Frequently Asked Questions

What is SIC code 81221?

SIC code 81221 represents "Window cleaning services" in the UK Standard Industrial Classification (SIC) 2007 system. It is used by Companies House to categorise the primary business activity of registered UK companies. It falls under Section N — Administrative and Support Service Activities.

How many UK companies are classified under SIC 81221?

There are currently 5,151 active UK companies registered under SIC code 81221 (Window cleaning services), out of 5,326 total registrations.

Where are most Window cleaning services companies based in the UK?

The top locations for Window cleaning services companies in the UK are LONDON, BIRMINGHAM, LEEDS, MANCHESTER, GLASGOW. London typically leads in company registrations across most sectors.

How do I find a specific Window cleaning services company?

You can browse all companies on this page, or use CompanyPulse's search at companypulse.co.uk/search to find a specific company by name or company number. Each company profile includes directors, financial data, risk analysis, and filing history.

How many new Window cleaning services companies were incorporated in 2026?

198 new companies were registered under SIC code 81221 in 2026. CompanyPulse tracks all new UK incorporations in real time via the Companies House data stream.