This thread seams to be predominately concerned with taxiing "expeditiously".
The concrete at the end of 15 at BHX is SO slippery when wet that EVEN at a WALKING PACE, control of the aircraft can be lost. I know, it happened to me, only max reverse stopped us sliding onto the grass....just, and I mean just.
We filed an ASR and thats the last I heard of it.
It is unacceptable that Birminghams Airport Authorities rely on local knowledge to stop accidents happening. The runway is unsafe and they should tell everyone that it is, until they spend the money to make it safe.
How about "Very Slippery When Wet" being promulgated by NOTAM until it is promulgated on the airfields charts?
ps Don't tell anyone, it's a secret.