Shurdington Parish Council are not responsible for monitoring and controlling the speed of vehicles within the parish.
Speed limits are set by Gloucestershire County Council, this includes 20mph zones. GCC are also responsible for the installation and maintenance of speed control measures e.g. speed humps, chicanes etc.
The enforcement of existing speed limits is a matter for the local Neighbourhood Police team.
Should you have any speeding concerns Shurdington Parish Council would advise that you contact the local police team by phoning 101 (non-emergency number) or by emailing: firstname.lastname@example.org