Tony's ably centralised means of survival (5)
I believe the answer is:
blair
'tony's' is the definition.
(I've seen this before)
'ably centralised means of survival' is the wordplay.
I cannot quite see how this works, but
'means' could be 'air' (I have seen 'Means of travelling' mean 'air ' so perhaps 'means' could also mean 'air ') and 'air' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for blair that I've seen before include "former leader" , "Former prime minister" , "He followed Smith as party leader" , "Tony ..., modern P.M." , "Was this prime minister a Libra?" .)