Pick up £1,000 tip (5)
I believe the answer is:
glean
'pick up' is the definition.
(I've seen this before)
'ps1000 tip' is the wordplay.
'psg000' becomes 'g' (I can't explain this - if you can you should give a lot more credence to this answer).
'tip' becomes 'lean' (synonyms).
'g'+'lean'='GLEAN'
Can you help me to learn more?
(Other definitions for glean that I've seen before include "Gather after reaping" , "Reap as harvest" , "Angel (anag.)" , "Gather (after reapers)" , "Gather; collect gradually" .)