Firefighters have announced they will repeat the eight-day bout of walkouts staged earlier this month in August, too.
Members of the Fire Brigades Union have agreed to yet more strike action as they say the government have still not improved their pension proposals.
According to the union, the current proposals in England and Wales could mean that firefighters face dismissal simply because they cannot maintain the high physical fitness requirements necessary for their role until they are age 60.
Union general secretary Matt Wrack said today: “It is absolutely ludicrous that a government can impose a scheme which means that firefighters will have to ride engines and rescue people from fires up to age 60.
“This is unsafe and unrealistic for both firefighters and the public.
“We know it, and the public know it, but the government will not listen to the evidence based case we have made to them”.
The strikes will take place for eight consecutive days from Saturday, August 9 until the following Saturday, August 16 between 12pm and 2pm, and again at 10.59pm to 11.59pm.
The latest round of industrial action mirrors an eight-day series of strikes taken between July 14 and 21, which was preceded by a one-day walkout by firefighters on the same day as Unison and Unite civil service members on July 10.
Herts County Council advises people to take extra care during the strikes, and to always call 999 in an emergency as cover will be provided by resilience crews.