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.
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Mainly dry with variable amounts of cloud and bright spells across the east. Cloudier towards Cambridgeshire with showery rain possible.