15" Laptop with Decent Screen and Reasonable Performance

I'm looking for a general purpose 15" laptop with decent screen and reasonable performance. I think this should be do-able for my budget haven't kept up to date recently so any advice would be appreciated!

General Questions

1) What is your budget?
GBP £300.00 - £400.00

2) What size notebook would you prefer?
Mainstream; 15" - 16" screen

3) Where will you buying this notebook?
UK

4) Are there any brands that you prefer or any you really don't like?
Nope - open to all mainstream...

15" Laptop with Decent Screen and Reasonable Performance

15" Laptop with Decent Screen and Reasonable Performance