Who is reponsible for updating sat nav information?

A local road had its speed limit reduced from 40 to 30 in August 2023 but the GPS in my car still shows 40. Who's job is it to get a database updated when a speed limit is changed?

What are the speed limits for a Toyota 4x4 pickup?

Can you tell me the speed limits for a Toyota HL2 4x4 light utility goods vehicle category N1 less than 2040 in weight. It is all very ambiguous and the police do not seem to know.

How accurate are car speedometers?

Some local authorities are proposing that drivers will be given penalty notices for exceeding 20mph limit by as little as one mile per hour. Does this match the level of accuracy of speedometers? I thought...

A private road I have right of way on has no obvious speed limit. Should there be speed limit signs on a private road?

I, along with seven other residents, have a right of way by vehicle over a private road that leads onto an A road. The private road has no speed signage etc. The road is owned by a campsite at the end...