Contingency plans are being put in place across the Anglia region as firefighters prepare to take part in a four hour nationwide strike.
It's in a row over pension plans.
Emergency calls will still be answered but there may be no response between 12pm and 4pm to calls about things like gas leaks and flooding.
More top news
Douglas Carswell told ITV's Peston On Sunday he wanted to "support" the government as a "critical friend" but refused to rule out a return.
The Ukip leader confirmed he had "no prior warning" of Douglas Carswell's resignation from the party as he hit out at the "staunch Tory".
Another fine sunny day.