Richmond upon Thames · TW1

EICR in TW1 (Twickenham)? We'll point you the right way.

Covering Twickenham, St. Margarets, Strawberry Hill, including Isleworth, South Twickenham, St Margarets & North Twickenham. Find qualified electricians nearby.

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How to check an electrician is registered: see the Richmond upon Thames page.

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TW1 (Twickenham) in a nutshell

TW1 covers Twickenham, St. Margarets, Strawberry Hill, in Hounslow and Richmond upon Thames. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for TW1

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Two councils in one district

TW1 is split between Hounslow and Richmond upon Thames. Some councils run their own landlord licensing, so check which one your home is in.

Where's this from?postcodes.io (ONSPD) local authority
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Give your full postcode

TW1 stretches across Isleworth, South Twickenham, St Margarets & North Twickenham and more, so give your full postcode, not just 'TW1', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Postcodes change here

Lots of old TW1 postcodes have been retired. If an old letter shows a different postcode, use your current one.

Where's this from?Doogal/ONSPD: 665 of 1,506 postcodes active
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New to EICRs? Here's what to expect, how to get ready and what it costs, in plain English. Read the quick guide →

England landlord rules: quick version

  • Every 5 years: an electrical inspection and test by a qualified person.
  • Within 28 days: give your tenants a copy of the report.
  • If asked: send it to the council within 7 days.

More detail on the Richmond upon Thames page. Always double-check on GOV.UK.

Next door to TW1

TW10 · HamTW2 · WhittonTW7 · IsleworthTW11 · TeddingtonTW9 · North SheenTW3 · Hounslow

← Electrical safety (EICR) across Richmond upon Thames · all areas

Frequently asked questions

Which areas does TW1 cover?

TW1 (Twickenham, St. Margarets, Strawberry Hill) includes the wards of Isleworth, South Twickenham, St Margarets & North Twickenham, Teddington, Twickenham Riverside (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to TW1?

Neighbouring districts include TW10 (Ham), TW2 (Whitton), TW7 (Isleworth), TW11 (Teddington), TW9 (North Sheen) (ONS Postcode Directory via Doogal). A pro covering TW1 may well cover these too, so it's worth asking.

How many homes are in TW1?

About 11,234 households and 26,067 residents at the 2011 Census, across 665 active postcodes (Doogal / ONS Postcode Directory).

Which council area is TW1 in?

TW1 sits in Hounslow, Richmond upon Thames (postcodes.io). Parliamentary constituency: Brentford and Isleworth, Twickenham.

📊 The numbers behind this page
Postcode district
TW1 1
Areas covered
Twickenham, St. Margarets, Strawberry Hill 2
Active postcodes
665 3
Households (2011 Census, via Doogal)
11,234 2
Population (2011 Census, via Doogal)
26,067 2
Electoral wards
Isleworth, South Twickenham, St Margarets & North Twickenham, Teddington, Twickenham Riverside 4
Parliamentary constituencies
Brentford and Isleworth, Twickenham 4
Local authority
Hounslow, Richmond upon Thames 4
Households privately renting (Richmond upon Thames built-up area)
24.7% 5
  1. ONS Postcode Directory
  2. Doogal
  3. Doogal / ONSPD
  4. postcodes.io
  5. ONS Census 2021

Made with open data. See where it all comes from. Updated 26 October 2026.