The PCS union claims some court proceeding are being delayed today by strike action.
Nottingham Magistrates Court - Down to 2 courts from 11. Delaying sentencing in high profile case v. 19 climate change protesters. #pcsm20
Pickets are also on duty outside Government offices and other departments, including the Office for National Statistics in London where the latest unemployment figures have been published.
PCS members handed out leaflets which say the dispute is the most serious ever faced by the union.
More top news
The Tunisia attack coroner has denied neglect by TUI and the hotel owners played a role in the deaths, so why are some relatives suing?
The 87-year-old, who broke the four-minute mile, has described the problem of doping in sport as a source of "extreme sadness" for him.
Survey finds many are unaware that penalties will double from tomorrow - but most don't think it will stop dangerous driving.