Went in store (Leamington Spa) to renew my Tesco Mobile contract. Spoke to Lorraine who I had renewed with previously. She is very friendly and efficient and recommended the plan best suited for my needs. It's all good from the advisor point of view. The mobile service is reliable and, I feel, good value for money with the Clubcard deals and no annual rate rises while you are in contract.
I am happy to remain a Tesco mobile customer for a least another couple of years.