First things first I'd take a holiday. Then maybe buy a boat and throw boat parties all the time
edit: And what do you think your immediate reaction would be while watching the draw?
I think I'd be something like: "please please please please" (x100) during the draw, then stunned silence for around 10 seconds after I've matched every ball, then about a thousand OMGs, then go and make some toast while I gather myself
Always wanted to travel to a non-developed country and help out. Yeah I know I don't need 7 mil to do that, but it'd mean I could help with aid etc. Pay off my student debt and buy my mum a house. Oh yeah
Donate some (I don't know how much) to Leukemia/Lymphoma research. Buy my parents a house in the mediterranean somewhere so they can live there when my dad retires. Set aside around 75k for my brother so he can go to university and not worry about fees or other costs. Probably set aside around the same amount for myself to get through university and then maybe postgraduate if I decide to do that. Then I'd probably put the rest in savings until I need it. Leave university with hopefully a good degree, get a good job and buy a house with the money. I'd probably just keep the rest for the future, maybe invest in property or use it to go on holidays if the salary I earn wouldn't allow me to do that at least once a year. I would try and save a lot of it for retirement. I guess if I invest most of it over 40 odd years then I'll have plenty by the time I retire. Then I might travel the world and yeah.
Take it to an area with a field and high middle aged population/any LabourLiberal voting constituency, put it in a pile and set fire to it. Every last penny. Then hop on my push bike to escape the angry mob wearing a V for Vendetta mask