Use the money to train for you CPL and Instrument rating in the UK and get a job in the industry, you will get to fly as much as you want and earn decent money.
If you decide to buy a helicopter look at a Bell 206 if it's a runaround for you. If you want something to crosshire to others to make some money get an AS350 B2 or B3, they are good aircraft for utility type work or charter. Don't go near the BO105 as parts are becoming hard to get and qualified engineers are few and far between.
Good luck