10/10, fantastic, 1:45 left. Felt slightly easy to me but hey, I give a 10/10 board all stars. Give back what you receive, know what I'm sayin'?!

Really nice grid.
(But A10 and A4 are not UK motorways! )

Good one

Liked the novel groups used.

Good effort :-) confusing at first but easy to work through the groups once you take stock.

A4, A1 and A3 are all interchangeable though being both motorways and paper sizes, making those two groups impossible to get other than trial and error.

Nice grid, nice concept. But they really have to have only one valid solution. As others have said, A1, A2, A3, A4 and A5 are all paper sizes AND UK roads, so lots of possibilities. Also as others have said, only roads with M designation are motorways (M25 or A57(M)). Nice concept, needs work.