my taps were sucking air up for ages yesterday. I rang United Utilities to find that there had been a major water leak and that they had to turn off the water to repair it. The repair took a few hours but then they had problems "charging" the system - getting the water to run back through.
All is well now though.
When I rang UU there was a pre recorded message playing to instruct you on water to do if you suspect that your pipes might be frozen. It involved using a hair dryer on the cold water pipe and gently warm it up.
Check with your neighbours, but mine are on a different supply, and then ring up your supplier for advice.