[Jack_]

With £5M I'd:

- Buy a nice, big, modern house in a good location [with a pool, games room/bar, cinema room etc etc]
- Modern furniture
- Give £1M to my parents, £25K to each of my four siblings
- Go on a few holidays

With £100M [which is what I'd prefer and would be more excited to win]:

- Buy a nice, big, modern house in three/four countries. Make them all pretty much identical [pool, games room/bar, cinema room etc etc]
- Hire staff [cooks, cleaners, security guards etc] and pay them off the interest I'd be making
- Buy my parents a similar house [or alternatively just give them a couple of million to buy what they want]
- Give all four siblings £1M each
- Alternatively to all of that, buy an entire street out in a nice location where all my family + friends could live
- Some holidays, luxuries etc
- Then sit on my arse for the rest of my life, throwing parties every day
- Most importantly, enjoying never having to walk into a shop counting how much I'm spending