Old president in uniform following ceremony I perform (8)
I believe the answer is:
pompidou
'old president' is the definition.
'pompidou' can be an answer for 'president' (French president Georges Pompidou). I'm not certain of the 'old' bit.
'uniform following ceremony i perform' is the wordplay.
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'following' is a charade indicator (letters next to each other).
'ceremony' becomes 'pomp' (I've seen this in another clue).
'perform' becomes 'do' (both can mean complete an action).
'pomp'+'i'+'do'='pompido'
'u' after 'pompido' is 'POMPIDOU'.
'in' is the link.
Can you help me to learn more?
(Other definitions for pompidou that I've seen before include "Once leading Frenchman" , "Paris arts centre name" , "statesman" .)