Sole trader following me, horsing around (10)
I believe the answer is:
fishmonger
'sole trader' is the definition.
'following me horsing around' is the wordplay.
'following' becomes 'f' (used when citing page numbers etc).
'around' is an anagram indicator.
'me'+'horsing'='mehorsing'
'mehorsing' with letters rearranged gives 'ishmonger'.
'f'+'ishmonger'='FISHMONGER'
(Other definitions for fishmonger that I've seen before include "Shopkeeper" , "Shop" , "Seller of salmon, cod, etc" .)