Switching gas only

I already have electricity with Bulb but my gas elsewhere. I want to switch my gas to Bulb too. How easy is this to do, and where do I start? I’m struggling to find the obvious option(s) on the site. Thanks.

@MarkW_74 You can just ask us to switch the gas and we can bring it over to us. Give us a call on 0300 30 30 635, from Monday to Friday (9:00am to 6:00pm) or send us an email and we can get this sorted for you.