Speedo problem

[Pretorian66]

Hi, my A4 tdi has developed a fault, the speedo doesnt work, ABS and ESP lights are on, but mileage still increases and all other dash stuff works, recently i've had a new clutch and some work n/s/f wheel area, could any of this be indicative?

Is there any NSF Wheel arch wiring that could cause this fault?

Where's the speed sensor located?

Anywhere in Leicester/Derby I could take it that wont cost a fortune?

Many thanks

[a8 tech]

on the gearbox