Pompous type, British, with affected walk (5)
I believe the answer is:
blimp
'pompous type' is the definition.
(I've seen this before)
'british with affected walk' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in BBC).
'with' is a charade indicator (letters next to each other).
'affected walk' becomes 'limp' (limp is a kind of walk. I am not sure about the 'affected' bit.).
'b'+'limp'='BLIMP'
Can you help me to learn more?
(Other definitions for blimp that I've seen before include "aircraft" , "returns one pound to provost" , "Airship - barrage balloon" , "full of hot air?" , "needs cover when shooting" .)