Last time I was in the UK I was unable to speak or hear on my mobile which is with Vodafone.es. When I got back to Spain it was fine. I have bought a new UK mobile but won´t get it until I reach my destination and will still need to use my Spanish mobile when I arrive at the airport. Never had this problem before. Any clues guys as I am back to the UK on Monday.

My contract Vodafone came with a bar on international/roaming outgoing calls ,SMS was left unbarred ,you can get this lifted but I never botherd as it avoids the temptation of letting them rob yop

Mine is PAYG and never had a problem before.