The residential packages which have a Talktalk landline included have free calls to fellow Talktalk customers up to 3 hours, @James1974 ..... it's tricky working out who's with Talktalk though. Not top of most people's conversation priorities, but if you have friends or family that you know use Talktalk, it's helpful. No need to pay for a boost.
https://community.talktalk.co.uk/ukcallcosts
Gliwmaeden2, a fellow customer.
