If you have line rental with TalkTalk they are now blocking indirect access codes such as 18866, 1899, 18185 etc, so you are stuck with their dearer costs.

Well, have tried Kingston's Talk More service?

It works as a CPS down BT lines. Talk More option 3 offers you unlimited local and national calls plus 50 inclusive minutes to call mobile phones at weekends. All forjust £12.99 per month.

More information: www.kcom.com/talkmore

They are awfully expensive on option 2 and 3.

I don't think thats expensive especially if they are offering 50 minutes of talktime to mobiles at weekends.

your monthly bill would be £24.99 rather than BT's £26.99 without any free mobile calling.

But the wise wouldn't use BT for their calls, only the line rental.