If you get a UK layout, you at least retain the extra key left of Z and a correctly shaped Enter.

(Since English doesn't need any accented letters, and the only extra symbol needed is £, the brackets are accessed without modifier for [] and with shift for (), {}. The only symbol requiring AltGr is €.)

How do you write åäö? :)

Either alt+134 etc on the numpad (windows), holding down the a or o key (OS X) or by temporarily changing to Swedish keyboard layout, depending on the situation.