Airport Fire Services Frequencies in UK
 

I have seen that it is quit common that main UK Airports has FIRE RESCUE SERVICE VHF frequency like LHR , LGW...

Lets see this scenario :

Aborted take-off due to an engine fire, pilots perform the emergency procedures and inform ATC.

When it is recommend the pilots to contact the fire rescue services in this situation? The Tower will instruct them to contact them using the 2nd Radio panel and continue to monitor Tower frequency , or the pilot can do it if the circumstances dictate otherwise?

UK pilots how do you proceed in this situation ? Any recommendations in UK-AIP?

Adding to the previous, once the emergency services arrive at the aircraft, control of the incident is taken over by the senior fire officer so the aircraft should be told to at least monitor the fire frequency (usually 121.6) prior to this.

Thanks guys