most UK speed limits should have been tweaked in a 2020 map update.... (which will be data from late 2018 on the disc) either they have given up or they moved the release date to 2 years.....
many Merc discs never turned up in Aug 2019 round of updates (for 2020 -2021 year discs).
Prepare to be disappointed.... the M4 is being made into a death trap, smart mess and 5 bridges are being replaced and the lazy gits are just installing them 25m offset so many cars nav will be a mess for many years....
And NL just introduced new nationwide pathetic speed limits, they'll take 3 years to get on a merc nav system too
FYI (27 April) Germany just banned speed camera warnings on nav devices