Hi guys, Needing some help, My old laptop is getting replced as i have managed to crack the screen.

I have a budget of £800, looking for a 15" screen and a lightweight laptop so can carry around quite easily.
Mainly use it for Microsoft Office work, Picture and vidio editing, Some gaming and for graphic design work.
Any suggestions of laptops and specs would be good. Thanx
also i will be purchasing my own place shortly so will be using this laptop as a home computer also, Whats the best set-up internet wise? docking station so i can still easily carry the laptop around with me without having to unplug cables al the time.