From the NATS site
1 AD Category for fire fighting:
RFF Category 7. Category 8 by prior arrangement (12 hours notice required).
2 Rescue equipment:
3 x Panther 6 x 6 CA-5.
Cat 7 is 39 up to 49m fuselage length and 5m width
Cat 8 is 49 up to 61m fuselage length and 7m width
Though I somehow doubt that anyone would be allowed to operate if the capability was not up to legal requirements!!