Sheffield · S20
Gas safety certificate in S20 (Westfield)? We'll point you the right way.
Covering Westfield, Waterthope, Sothall, Donetsk Way, Owlthorpe, Beighton, Crystal Peaks, Halfway, Mosborough, including Aughton & Swallownest. Find Gas Safe registered engineers nearby.
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Request a gas safety certificate in S20 (Westfield)
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Request a gas safety certificate in S20 (Westfield)
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S20 (Westfield) in a nutshell
S20 covers Westfield, Waterthope, Sothall, Donetsk Way, Owlthorpe, Beighton, Crystal Peaks, Halfway, Mosborough, in Rotherham and Sheffield. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for S20
Two councils in one district
S20 is split between Rotherham and Sheffield. Some councils run their own landlord licensing, so check which one your home is in.
Where's this from?
postcodes.io (ONSPD) local authorityGive your full postcode
S20 stretches across Aughton & Swallownest, Beighton, Mosborough, so give your full postcode, not just 'S20', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Sheffield run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Sheffield: 78.6% mains gas onlyEngland landlord rules: quick version
- Every year: a check by a Gas Safe registered engineer.
- Within 28 days: give your tenants a copy (new tenants get it before they move in).
- Keep it: hang on to records for at least 2 years.
More detail on the Sheffield page. Always double-check on GOV.UK.
Next door to S20
Frequently asked questions
Which areas does S20 cover?
S20 (Westfield, Waterthope, Sothall, Donetsk Way, Owlthorpe, Beighton, Crystal Peaks, Halfway, Mosborough) includes the wards of Aughton & Swallownest, Beighton, Mosborough (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to S20?
Neighbouring districts include S21 (Eckington), S13 (Handsworth), S43 (Barlborough) (ONS Postcode Directory via Doogal). A pro covering S20 may well cover these too, so it's worth asking.
How many homes are in S20?
About 13,451 households and 31,211 residents at the 2011 Census, across 635 active postcodes (Doogal / ONS Postcode Directory).
Which council area is S20 in?
S20 sits in Rotherham, Sheffield (postcodes.io). Parliamentary constituency: Rother Valley, Sheffield South East.
📊 The numbers behind this page
- Postcode district
- S20 1
- Areas covered
- Westfield, Waterthope, Sothall, Donetsk Way, Owlthorpe, Beighton, Crystal Peaks, Halfway, Mosborough 2
- Active postcodes
- 635 3
- Households (2011 Census, via Doogal)
- 13,451 2
- Population (2011 Census, via Doogal)
- 31,211 2
- Electoral wards
- Aughton & Swallownest, Beighton, Mosborough 4
- Parliamentary constituencies
- Rother Valley, Sheffield South East 4
- Local authority
- Rotherham, Sheffield 4
- Households heated by mains gas only (Sheffield built-up area)
- 78.6% 5
- ONS Postcode Directory
- Doogal
- Doogal / ONSPD
- postcodes.io
- ONS Census 2021
Made with open data. See where it all comes from. Updated 26 October 2026.