Slough · SL3

EPC in SL3 (Colnbrook)? We'll point you the right way.

Covering Colnbrook, Datchet, Fulmer, George Green, Horton, Langley, Poyle , including Colnbrook & Poyle, Datchet, Horton & Wraysbury, Farnhams & Stoke Poges. Find accredited domestic energy assessors nearby.

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Request an EPC in SL3 (Colnbrook)

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Request an EPC in SL3 (Colnbrook)

How to check an EPC assessor is registered: see the Slough page.

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SL3 (Colnbrook) in a nutshell

SL3 covers Colnbrook, Datchet, Fulmer, George Green, Horton, Langley, Poyle , in Buckinghamshire and Slough and Windsor and Maidenhead. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for SL3

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Two councils in one district

SL3 is split between Buckinghamshire and Slough and Windsor and Maidenhead. 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

SL3 stretches across Colnbrook & Poyle, Datchet, Horton & Wraysbury, Farnhams & Stoke Poges and more, so give your full postcode, not just 'SL3', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
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Terrace and semi country

Most homes here are terraces or semis. Insulation and heating upgrades are the usual way to nudge a rating up, so have receipts ready.

Where's this from?ONS Census 2021, Slough: 25.5% terraced, 29.7% semi-detached
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New to EPCs? 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

  • When you let: you need a valid EPC, usually good for 10 years.
  • Minimum E: most private lets need E or better, unless exempt.

More detail on the Slough page. Always double-check on GOV.UK.

Next door to SL3

SL0 · IverSL1 · BurnhamSL2 · Farnham CommonTW20 · EghamSL4 · BoveneyUB7 · West Drayton

← Energy Performance Certificate (EPC) across Slough · all areas

Frequently asked questions

Which areas does SL3 cover?

SL3 (Colnbrook, Datchet, Fulmer, George Green, Horton, Langley, Poyle ) includes the wards of Colnbrook & Poyle, Datchet, Horton & Wraysbury, Farnhams & Stoke Poges, Iver, Langley Foxborough, Langley Marish, Langley Meads, Langley St Mary's, Slough Central, Upton, Wexham Court (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to SL3?

Neighbouring districts include SL0 (Iver), SL1 (Burnham), SL2 (Farnham Common), TW20 (Egham) (ONS Postcode Directory via Doogal). A pro covering SL3 may well cover these too, so it's worth asking.

How many homes are in SL3?

About 17,312 households and 45,192 residents at the 2011 Census, across 1,077 active postcodes (Doogal / ONS Postcode Directory).

Which council area is SL3 in?

SL3 sits in Buckinghamshire, Slough, Windsor and Maidenhead (postcodes.io). Parliamentary constituency: Beaconsfield, Slough, Windsor.

📊 The numbers behind this page
Postcode district
SL3 1
Areas covered
Colnbrook, Datchet, Fulmer, George Green, Horton, Langley, Poyle 2
Active postcodes
1,077 3
Households (2011 Census, via Doogal)
17,312 2
Population (2011 Census, via Doogal)
45,192 2
Electoral wards
Colnbrook & Poyle, Datchet, Horton & Wraysbury, Farnhams & Stoke Poges, Iver, Langley Foxborough, Langley Marish, Langley Meads, Langley St Mary's … 4
Parliamentary constituencies
Beaconsfield, Slough, Windsor 4
Local authority
Buckinghamshire, Slough, Windsor and Maidenhead 4
Households privately renting (Slough built-up area)
29.0% 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.