Tesco offers some additional benefits when it comes to both phone contracts and SIM plans if you sign up to its Tesco Clubcard Plus scheme. This costs £7.99 a month and while it rewards you with 10% discounts on two shops each month, the more interesting benefit comes on your phone.
Tesco is doubling the data on a pay monthly contract meaning you can easily score some extra bits of data if you're looking for a clubcard upgrade.
If the £7.99 a month seems a bit too pricey, the base line phone plans and SIM offers from Tesco are strong in themselves - the doubled data is just a nice bonus.