Recommendation for data SIM in UK

[dxy]

Originally Posted by wisniak

Thank you, NFH.

I just found a local site that sells t-mobile prepaid pre-activated SIM cards.

Is there some sort of plan that I need to purchase in order to have data? eg 1/3GB.

Further, are there SIM cards than can do both voice & data?

In 2010 I had a Vodafone SIM card in Italy, it was a mess, huge costs for data (which is my main use). Throughout my 2-week visit I was unable to change the plan I was in to a more appropriate one.
Same happened on a 2009 visit to Paris.

On later visits to other European countries there was no such problem - the SIM worked immediately and had very good 3G coverage - Greece, Spain, Sicily (Italy) and other countries.

I think this is the one you want because it has the most free data
https://freesim.vodafone.co.uk/text-and-data-sim-card
However, you can spend your top up how ever you want. you dont need data separately unless it is a contract SIM. Because you are going for Pay as you Go then just dont worry about it.