Current British Resusitiation Council advice is for 30 compressions to 2 breaths, and this is what is taught by St John, Red Cross, British Heart Foundation, Ambulance Services, and all other bodies in the UK, at the moment.
As my next door neighbour runs one of the largest Health & Safety Training companies in Wales, and therefore gets any changes before they are made public, I shall ask him to let me know if anything changes.
I would encourage EVERYONE to go on a training course, and learn basic CPR as soon as possible.