Energy suppliers and networks

SGN phone numbers

Edited by Richard BarkerChecked 13 October 2026

SGN publishes 3 numbers for you to call on its own website. We list each one with the page it is on (3 pages in all), a short quote from that page and the date we checked it.

Contact SGN How to check a call

Numbers to call SGN

What each line is for, as SGN describes it, with opening hours where it gives them.

0800 111 999
You call them on this number
National Gas Emergency Service (smell gas)
Hours: 24 hours
Source: “24-hour National Gas Emergency Service on 0800 111 999” (opens in a new tab). Checked 13 October 2026.
0800 912 1700
You call them on this number
Customer service
Hours: Monday to Friday 9am to 5pm
Source: “Talk Monday to Friday 9am to 5pm 0800 912 1700” (opens in a new tab). Checked 13 October 2026.
0800 048 2438
You call them on this number
Check an SGN engineer or contractor is genuine
Hours: 24 hours
Source: “You can call us for free on 0800 048 2438” (opens in a new tab). Checked 13 October 2026.

What SGN says it will never ask for

“Our engineers and contractors would never ask you to hand over cash” (source (opens in a new tab))

How scams that copy energy suppliers and networks work

UK Finance says criminals pose as organisations such as utility companies, claiming you must settle a fine, pay a bill or return a refund paid by mistake. Ofgem warns that scammers may contact you by phone, text, email, social media or at your door, pretending to be from Ofgem or an energy company.

Energy scam calls

This could still be a scam call

Criminals can make their number look like a genuine one (this is called spoofing). If someone calls from this number and asks for money, bank details, a code or passwords, hang up. Then call SGN back on a number you've found yourself, such as the one on their own website or on a letter or bill from them.

Safe ways to check

SGN's own contact page (opens in a new tab): Where this number is published.
Report Fraud (opens in a new tab): Report fraud and cyber crime in England, Wales and Northern Ireland. In Scotland, call Police Scotland on 101.
Forward scam texts to 7726 (opens in a new tab): It is free, and reports the message to your mobile provider.
How number spoofing works: Why a genuine number on your screen does not prove who is calling.

Questions about SGN’s numbers

What numbers can I call SGN on?

SGN publishes 3 numbers for the public to call. They are: 0800 111 999 (National Gas Emergency Service (smell gas)); 0800 912 1700 (Customer service); 0800 048 2438 (Check an SGN engineer or contractor is genuine). Check the source page for each one before you call, as numbers and opening hours change.

What does SGN say it will never ask for?

SGN's own website says: "Our engineers and contractors would never ask you to hand over cash". If a caller asks for these things, hang up.

Does SGN publish a number on its own website that is not listed here? Suggest a number for SGN.

Sources and checks

This page relies on:

Checked on 13 October 2026. Read how we build the directory. How we check our information. Spotted a mistake? Tell us and we will put it right.