Former PM dies: Blair beheaded in riot (8)
I believe the answer is:
disraeli
'former pm' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for disraeli that I've seen before include "I lead, sir (anag) - British PM, d. 1881" , "Jane Austen novel" , "C19 Prime Minister" , "The British statesman was an ideal sir" , "Victorian PM" .)