Problem solved!!
When we had our floor tiles fitted the guy has put a screw through a pipe when putting the plaster board down!!
Time to rip the kitchen floor up!!
Thanks for all your help and Merry Christmas!
Yes under warranty. We had leak sealant put in to the system 6 weeks ago. Could this affect the boiler? We have noticed we have icicles hanging off the flu! Boiler losing 2 bar in 5 minutes now and making funny noises!
Thanks for the quick reply. You dont think there could be a leak under the floor boards? Do you know any way to keep pressurised until i can get a plumber out as i dont trust myself!!