All hate rally Rob arranged for London concert venue (5,6,4)
I believe the answer is:
royal albert hall
'concert venue' is the definition.
(I've seen this before)
'all hate rally rob arranged' is the wordplay.
'arranged' indicates an anagram.
'all'+'hate'+'rally'+'rob'='allhaterallyrob'
'allhaterallyrob' with letters rearranged gives 'ROYAL ALBERT HALL'.
'for london' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for royal albert hall that I've seen before include "concert venue" , "Home of the 'Proms'" .)