Type of energy London university almost collects (7)
I believe the answer is:
nuclear
'type of energy' is the definition.
(I've seen this before)
'london university almost collects' is the wordplay.
'london university' becomes 'ucl' (I can't explain this - if you can you should give a lot more credence to this answer).
'almost' becomes 'near' (near can mean almost or virtually).
'collects' indicates putting letters inside.
'ucl' inserted inside 'near' is 'NUCLEAR'.
Can you help me to learn more?
(Other definitions for nuclear that I've seen before include "Involving part of an atom" , "An ulcer (anag)" , "In sociology, of a family of parents and offspring only" , "basic family" , "Using atomic energy" .)