Im gonna recommend VIRGIN Mobile PAYG. Sod what you think of Branson et cronies.
This is cos you get starter tariff first,
then you switch to Big Talk Tariff.
Then top up 15quid.
And 15 each month after if you want the benefits to continue.
Super useful. as you get 3000 texts, unlimited calls to landlines, any starting with 01, 02, 03. Useful docs/hospitals/dwp etc, see? Plus 120 minutes to UK mobiles.
So all this 45p a minute to DWP malarkey can cease with this tariff as its free calls to landlines.