There's a good deal available at the mo....
T-mobile Full Monty
Sim 12 Month (£15.50 a month after cashback)
Unlimited Any Network Minutes / Month
Unlimited T-Mobile Calls / Month
Unlimited Texts / Month
Unlimited* Data / Month
http://www.hotukdeals.com/deals/50-off-full-monty-sim-only-unlimited-calls-texts-internet-chitter-chatter-15-50-1314992
T-mobile Full Monty
Sim 12 Month (£15.50 a month after cashback)
Unlimited Any Network Minutes / Month
Unlimited T-Mobile Calls / Month
Unlimited Texts / Month
Unlimited* Data / Month
http://www.hotukdeals.com/deals/50-off-full-monty-sim-only-unlimited-calls-texts-internet-chitter-chatter-15-50-1314992