The first picket lines have begun to form across the region as firefighters stage a four-hour strike.
This was the scene in Corby, Northamptonshire, just after midday today as the industrial action began.
It's over a dispute about pensions and proposals to change the retirement age for crew members.
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Following the hottest day of the year so far, it will be a muggy night. Showers will develop this evening and will continue tomorrow.
The Duke and Duchess of Cambridge have been in Luton today, to continue to raise awareness on mental health.
An 87-year-old man has been sentenced to a psychiatric hospital for six years for shooting his wife dead at a care home in Essex.