South East London Mind provides a friendly, safe and confidential telephone befriending service. This includes a regular weekly 30-minute chat with the same volunteer for up to 3 months.
The Samaritans offer a friendly chat for people struggling to cope. Call them for free on 116 123 or chat online with the Samaritans.
Age UK offers an advice line and a friendly chat if you're feeling lonely on 0800 678 1602. Lines are open 8am to 7pm, 365 days a year.
Age UK and their charity partner The Silver Line can also help you set up a telephone friendship service.