Newer isnt always better
If you needed a newer kernel for some sort of support (eg TRIM for SSDs) thats one thing, but just getting a newer kernel because you can is a bit different.
That said, theres several ways you could get a newer kernel-
1- You could build one yourself.
2- Get a newer kernel from debian testing/unstable.
3- Get the liquorix kernel-
I'd go for option 3 myself.
As for the 'british english', I _think_ that what you have done is select a british keyboard layout. I have no idea how to fix that offhand, but hopefully somebody else will. I'd be suprised if snowpine doesnt know.