She's decided to go for Vodafone unlimited calls, unlimited texts and 1gb of data for £15 - 12 month contract. Apparently BB10 doesn't need a special Blackberry data services package......the SIM is on its way. I'll report back
Good luck I was with vodafone but I left after they screwed up my contact twice in a month.
I managed to get 2000 mins, unlimited texts, unlimited data and tethering with T-Mobile for £14.99 per month on a Sim Only, but unlimited data is hard to get now for a decent price.
The only reason I am not with Giff Gaff is that the only signal I can get where I live is EE

although I have noticed that o2 have put up a new mast no far from me so when my Sim Only contract is up I will investigate and see if the o2 signal has improved since I last tried it.