Thanks for your advice.  I did some homework on the Vodafone site and see that it is only good for Vodafone customers on monthly contracts, with a Northern Ireland postcode.  I will keep searching and am currently finding that a basic Tesco, O2 pay & Go and an 0044.co.uk plan m...

I am travelling on vacation to the UK and Ireland in August 2013. I wish to purchase a SIM card to place in my unlocked Samsung Galaxy Ace handset. SIM cards from Tesco or similar are only good in UK and Northern Ireland. In southern Ireland I presume it will go into roaming. Will this incur fu...