What is the largest mobile phone operator in the UK, in terms of users?

Question

I would like to know what is the largest operator in terms of users in the UK. Does anybody know what the answer is? Is there a break down of the various mobile phone operators, that would tell me what is the first to the last in the UK? Thanks in advance.

Answer 1

I think Orange are the largest with Vodafone 2nd. Other operators are T-Mobile, and one2one. 3 are a 3G network only.
The first was Vodafone, not sure about last

Answer 2

orange, in France also