How do you change a headlight bulb in a 2008 vauxhall corsa?

Corsa's have several different makes of headlamps fitted.

The instructions vary according to the make.

Go to you local Vauxhall dealer, buy the bulb from them, and if they are any good they will fit it for free. (I do!)

"Financial remuneration" (A "tip") is appreciated, but not mandatory!