'As green-fingered as a camel', Yvonne???? Never heard that one before!!
If I won £161 million, I'd.........
Buy houses for all the kids so they wouldn't need to worry about ever getting on the housing ladder.
Pay off student loans or put the money aside for those who haven't got them yet so they wouldn't have to worry about uni fees.
Make sure all our parents are secure for the foreseeable future.
Sell the house we live in and buy a bigger one where Mr. C can have a room, preferably sound-proofed, to listen to his music as loudly as he wants to without annoying/disturbing the rest of us.
Would so get a cleaner......
Definitely donate to a few charities like SANDS and obviously to the latest Famine Appeal.
Sell the business or employ more people to work on it as if I didn't have to work, I certainly wouldn't. I don't understand people who say they'd have to work?!

Would be more than happy pottering around reading whatever I wanted when I wanted.
Go on one long holiday with ALL the 'kids' and their partners/friends etc to somewhere like The Gulf Coast in Florida. The flights are way too expensive for us to afford to take everyone at the moment.
Mr. C would probably like a better car although nothing too flashy (prob an Audi of some kind???). I'd like one of those little cute retro-looking Fiat 500s....
No way would I go public although we have a big lottery winner near us and even though they didn't go public, EVERYBODY knows who they are as they moved to a massive house, which they renovated extensively: they got a hot tub!!!: numerous cars including a Ferrari and a brand new car for one of their kids when she was 17: a yacht in Spain and numerous Carribean Holidays! It would seem that it's not all that easy to stay anonymous.
Now, where's that scratchcard......?