From the Pilot's Notes for the Vampire T11 (amended to 1970) powered by the Goblin 3:
ENGINE LIMITATIONS
Take-off and operational necessity (15 mins.).. .. .. .. 10750 rpm 710°C (10350 rpm above 25000ft); [RAF users restricted to 10650 rpm]
Intermediate (20 min.) .. .. .. 10350 rpm 660°C
Max. continuous .. .. .. 10250 rpm 650°C
Ground Idling .. .. .. 3000±200 rpm 600°C