Goods train operator no longer fine, I hesitate to say, with speed in commuter area (11,4)
I believe the answer is:
stockbroker belt
'commuter area' is the definition.
(term for an affluent suburban area)
'goods train operator no longer fine i hesitate to say with speed' is the wordplay.
I cannot really see how this works, but
'goods' could be 'stock' (stock is a kind of goods) and 'stock' is present in the answer.
'train' could be 'el' (El train, short for elevated railway) and 'el' is found within the answer.
'no' could be 'o' (O resembles 0) and 'o' is present in the answer.
'hesitate' could be 'er' (expression used when hesitating) and 'er' is located in the answer.
This explanation may well be incorrect...
'in' is the link.
(Other definitions for stockbroker belt that I've seen before include "in which you'll see people out of business?" , "Affluent residential area" , "part of Surrey?" , "Prosperous area" , "area where the rich live" .)