Southern Gas Networks (SGN) mailing address
To mail a letter to Southern Gas Networks (SGN), a gas distribution network serving the South of England, send it to the correspondence address at Southern Gas Networks (SGN), St Lawrence House, Station Approach, Horley, Surrey, RH6 9HJ. Southern Gas Networks (part of the SGN group) owns and operates the gas distribution network delivering gas to homes and businesses across the South of England. This is Southern Gas Networks (SGN)'s publicly listed correspondence address — for billing disputes, service requests, account closures, and formal notices. It's not the address utilities use for bill-payment remittance; use the PO Box printed on your own bill for payments. Add your return address if you'd like a reply, and confirm this address on Southern Gas Networks (SGN)'s official contact page before anything time-sensitive.
Southern Gas Networks (SGN) — correspondence address
Southern Gas Networks (SGN) St Lawrence House Station Approach Horley, Surrey RH6 9HJ
Written correspondence — billing disputes, service requests, account closures, and formal notices. Not the separate address used for bill-payment remittance; use the payment stub or PO Box printed on your own bill for that.
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Your name
Your return address
Southern Gas Networks (SGN)St Lawrence HouseStation ApproachHorley, Surrey, RH6 9HJ
Your letter, printed and mailed for you.
Key facts
- This is Southern Gas Networks (SGN)'s correspondence mailing address, taken from the utility's own contact page.
- Southern Gas Networks (SGN) is a gas distribution network serving the South of England.
- Use it for letters, disputes, service requests, and formal notices — not for bill payments, which go to a separate PO Box printed on your bill.
- Include your account number and service address so the utility can find your file.
- Include your return address and a reference number so the utility can respond.
- PostPal prints your letter and mails it for you — no printer, envelope, stamps, or post office trip.
How to send your letter
- 1
Decide what your letter is for
Use this address for written correspondence — a billing dispute, a service request, an account closure, or a formal notice. If you're mailing a cheque or payment, use the remittance address printed on your own bill instead; utilities almost always route payments to a separate PO Box.
- 2
Write your letter
Include your account number, your service address (if different from your mailing address), the outcome you're looking for, and your return address so Southern Gas Networks (SGN) can respond.
- 3
Address it to the correspondence address
First line: Southern Gas Networks (SGN). Next: St Lawrence House. Then the street: Station Approach. Then the city line: Horley, Surrey RH6 9HJ.
- 4
Send it with PostPal
Write or upload your letter to PostPal with the address above prefilled. We print it, add your return address, and mail it for you — no printer, envelope, stamps, or trip to the post office.
Common questions
What does Southern Gas Networks (SGN) do?
Southern Gas Networks (part of the SGN group) owns and operates the gas distribution network delivering gas to homes and businesses across the South of England. It serves the South of England. The address above is its correspondence address — the right place for account letters, disputes, and formal notices.
What is Southern Gas Networks (SGN)'s mailing address?
Southern Gas Networks (SGN), St Lawrence House, Station Approach, Horley, Surrey, RH6 9HJ. This is Southern Gas Networks (SGN)'s publicly listed correspondence address. Confirm it on Southern Gas Networks (SGN)'s official contact page before anything time-sensitive — utilities occasionally change offices and PO Boxes.
Can I mail my bill payment to this address?
Not usually. This is a correspondence address for letters, not the payment-processing address most utilities use for mailed cheques. Use the remittance address or PO Box printed on your own bill for payments, and this address for everything else — disputes, service requests, and written notices.
How do I dispute a charge or file a complaint by mail?
Write a clear, dated letter explaining the charge or issue, include your account number and any supporting documents, state what resolution you're asking for, and include your return address. Mailing it creates a dated paper record, which can help if the dispute escalates.
How do I close or transfer my account by mail?
Include your account number, the closing/transfer date, your forwarding address, and a phone number in case Southern Gas Networks (SGN) needs to confirm details. Most utilities also offer this online or by phone, which is often faster if you're on a tight moving deadline — mail is best for a written record or when online/phone options aren't available.
How do I mail Southern Gas Networks (SGN) a letter without a printer?
Write or upload your letter to PostPal with the address prefilled. We print it, add your return address, and mail it for you — no printer, stamps, or post office trip needed.
Sources
Addresses verified September 2026 against official sources. Always confirm on the official site before time-sensitive filings.