He has a couple of supporters going round (5)

I believe the answer is:

biker

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'going round' is the definition.
I know nothing about this answer so I can't judge whether this works.

'he has a couple of supporters' is the wordplay.
'he' becomes 'Ber'.
'has' is an insertion indicator.
'a couple of supporters' becomes 'ik' (I can't explain this - if you can you should believe this answer much more).
'ber' placed around 'ik' is 'BIKER'.

Can you help me to learn more?

(Other definitions for biker that I've seen before include "Rider" , "Motorcyclist" , "Hell's Angel?" , "Motorcycist" .)

I've seen this clue in the Evening Standard.

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