Upgrading Mid-Contract

[CoffeeB]

If I take out a 24 month SIM Only plan (150GB Red + Entertainment @ £33) and decide in 4 or 5 months time I want a more expensive 24 month SIM Only plan (150GB Xtra Global Roam + Entertainment @ £43), can I do that, as I'd be spending more money?

[AnnS]

That shouldn't be a problem @CoffeeB , Vodafone have this information on the website How do I Change my Plan? 

It would be worth speaking to Customer Services, they will be in a good position to advise the best plan.