Many on past record seem to agree (7)
I believe the answer is:
conform
'agree' is the definition.
(conforming is a kind of agreeing)
'many on past record' is the wordplay.
'many' becomes 'c' (C is the Roman numeral for f00).
'past record' becomes 'form' (I've seen this before. I am not sure about the 'past' bit.).
'c'+'on'+'form'='CONFORM'
'seem to' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for conform that I've seen before include "Run with the pack" , "Follow the herd" , "become fitter?" , "Match" , "Comply with accepted rules" .)