...Yup, the Hatfield Tunnel.
Serves me right. I floored it as I came onto the A1 southbound, just before entering the tunnel.
I was trying to get around two pikey lanscaping-trucks who were mucking about.
The rozzers pulled me at the other end of the tunnel (I'd probably gone way over 100). I just coasted for them as I spotted them too late.
To be fair I held my hands up and the Officer just said "They are nice cars aren't they.... but watch your rear-view when your coming onto the motorway"
Top Copper in my book. He could have been a complete b*stard if he'd wanted to.
