First deal so be nice, and hope you like it.
1. Click go to deal and order 2 Free T-mobile sims from T-mobile ->.
2. Then when you receive your free sims if you visit - http://www.t-mobile.co.uk/service/your-account/signup/
and register with those free sims you get £5 free credit on each for just doing that.
I found out you can use this £5 free credit on anything even premium numbers.
3. I request this sims every week and I always seem to get them within 3-7 days. So gives me £10 credit to spend on what I like just about every week.
Another thing worth noting is if you top up £10 you get free unlimited texts next month.