If you mean a system as defined in the ICAO Manual of A-SMCGS then I'm sorry to say not one UK airport has this. But there again no one in the rest of the world either.
Switchable centerline lights, stopbars, SMR, RIMCAS etc all are part of an A-SMGCS but the all walking - all talking system is some way off.
The multilateration trials NATS are involved in at LHR have revealed multipath reflection problems. The small nodal millimetric wave radar system at NEMA is up and running but not providing added value yet. Luton is to trial something similar soon.
Internationally, lots of companies are building systems such as Siemens, Thorn, Honeywell and some Japanese research labs.
It will come, but until you have enhanced Spatial Awareness in-cockpit and the VCR and Ops Vehicles share this fused data, you aint got A-SMCGS
Sir George Cayley