Newmarket in Suffolk is flooded? I'm really concerned.
All or most of the eastern counties were okay, they escaped the worst of it
(that weather came in from the Atlantic).
The mobile (cell to you) phone and/or land lines & the internet were unaffected, nationwide.
so I can't imagine why he's not answering your call.
Perhaps he's on holiday? We have this thing called silly season in England. It lasts from about now till September. It just means that if you try to 'phone anyone, they're on leave, out of town, away...
Gone fishing?
or at that mad pool party in ....