Trevor, clue is
100a. Oooops, missed out a bit of the clue, so sorry.
_on, took advantage of. (6,2)
I have, C?S?E? i?
So, so, sorry folks, heat going for me
cash in
vb (adverb)
1. (tr) to give (something) in exchange, esp for money
2. (intr; often foll by on) Informal
a. to profit (from)
b. to take advantage (of)
3. (intr) a slang expression for die1