Unfortunately (I don't have any photos)-not a good start! but the thorn alpha 6 used to be king of most of the motorways in the 70s and 80s but ive not seen any IN YEARS!
Do any still exist?
To try and jog peoples memories they used to light large portions of the motorway network...
I do know the following places used to have thorn alpha 6's
M1 M25/Luton area and possibly around Milton Keynes/Northamptonshire.
M1 Around Nottingham-likely.
M6/M69 Junction AND J4 area and J10-J11 area
M6 Thelwall viaduct-then Through J21A-J26 I think....
M6/M55 Junction DEFINIETLY had Alpha 6's prior to widening to D4M
M27 Around Portsmouth
M63 (Now M60) around/near Sale.
Also some A roads had them, the A557 at runcorn bridge had some (now removed!) and the M6/A49 Junction had some plus many of the M6 "twenties" junctions in the northwest!
I have heard some in Essex/Colchester may still exist? on the A12 perhaps?
These are NOT to be confused with "GEC Bricks" or those "Phillips bricks" found originally around the M4 in Berkshire, M6 in Birmingham or M56 near Manchester Airport.
Does anyone know where any of these oldies still exist? many have been replaced by MA60s.....havent seen any in at least a decade.