Wait around turning close to centre of Brent Cross (8)
I believe the answer is:
Here is my best explanation:
'cross' is the definition.
I know nothing about this answer so I can't tell whether this works.
'wait around turning close to centre of brent' is the subsidiary indication.
'wait' becomes 'tarry' (I've seen this before**).
'around' means one lot of letters goes inside another.
'turning' shows that the letters should be reversed in order.
'close' becomes 'by' (I've seen this in other clues).
'to centre of' says to take the centre.
The middle letters of 'brent' are 'e'.
'by' written backwards gives 'yb'.
'tarry' placed around 'ybe' is 'tayberry'.
(Other definitions for tayberry that I've seen before include "Scottish fruit", "Cross between blackberry and raspberry", "Red fruit named after Scots river", "Dark red soft fruit" and "Fruit".)