Just as a side note to this o2 appear to have expanded the offer to include a fre other things you can choose instead of the weekend calls
by default they give you free o2 to o2 calls as a bolt on free you can change this which I would to any of the below
unlimited texts
unlimited web
unlimited landline calls
200 extra x network mins
free weekend calls (which is what im on)
so for 25 quid this I think is outstanding
http://shop.o2.co.uk/tariffs/sim_only expand 25 quid deal
http://shop.o2.co.uk/extras change bolt on with the offer set up as mine is you will have 600 mins to use Tuesday Wednesday Thursday and Friday then Saturday Sunday Monday included in free bolt on and 1000 texts to use you have to be a real heavy user to go over the 25 quid unless you dial premium numbers saynotto0870 doesnt have land line for. I very nearly never use my landline for calls now (sorry for over simplifying things lol )