I made a sticker so I have the heights and ADR Codes at hand, can anyone please double check the heights, I don’t have my truck map to hand and Google is a bit sketchy on the answers.
(ADR Codes SHOULD be right because I got them from the gov.uk site)
Thanks

The Dartford Tunnel is 2 tunnels don’t forget.
The West Bore ( Left hand) tunnel is lower in height than the other East Bore ( right hand) tunnel.
With a Max Height Limit of 4.8m.
SEDriver:
… (ADR Codes SHOULD be right because I got them from the gov.uk site)

Those are spot-on mate, then there’s this for completeness:
Heathrow Tunnel 4.5M
Between 04:00 and 23:00 = Category E
Between 23:00 and 04:00 = Category C
Thanks DieselDave and Fodentanker.
Just something to stick on my clipboard so I don’t need to start looking it up at the start of a shift when planning a route.