Rather unusual oldish companies around University getting answer (1,6,5)

'answer' is the definition.

'rather unusual oldish companies around university' is the wordplay.
I cannot really understand how this works, but
'companies' could be 'coco' (co for company, twice) and 'coco' is present in the answer.
'around' could be 'o' (I've seen this in other clues) and 'o' is found within the answer.
'university' could be 'u' (abbreviation for university) and 'u' is found within the answer.
This explanation may well be incorrect...

'getting' acts as a link.

Can you help me to learn more?