I've been looking at this for a bit and took the plunge last week and got an EE Buzzard which was on offer at PC World for £25 with 6Gb of data.

I wasn't sure how good it would actually be but so far I'm very impressed. I'm getting better speed than I get on my home broadband, 25meg download and 10meg upload. It worked great in the car but I also wanted to use it in the caravan, where I am now, and it allows all of us to connect easily.

I've not travelled far yet but for a good connection in the caravan I am more than pleased.

Sounds like a good price - is there a time limit on using the data ?

I usually just set up a hot spot on my phone & use the data allowance on that.

As I spend a reasonable amount of time in France, I've been trying out one of their SIM cards - I got a 1 month PAYG with unlimited data including roaming in France for £15. Coverage seems OK so far - the only down side with the PAYG is that you can't do the tethering thing, but I think I'm going to switch the family monthly plans across & tethering is allowed then.

I've got a couple more weeks on the PAYG to check out coverage in other places before I take the plunge

From the EE website, it looks like 90 days for the 6Gb and a year for the 25Gb

PC world says 30 days for the 6GB............... Got - 2017 SDV8 Autobiography in Loire Blue
Had- 2008 TDV8 Vogue SE in Java black
Had - 2007 S/C in Stornoway Grey