My bulbs arrived this morning (4xH7 (main beam and headlights) and the free sidelights). All fitted and done!

It took around 20 mins, it's no-where near as bad as I feared. Best to start with the centre lights first (sidelights + mainbeam). Unclip and take the mainbeam bulb out, then pull out the sidelight holder - that way you get an extra couple of mm to play with! Needs quite a bit of welly, but I have escaped without grazed knuckles.
The sidelight bulb just pushes into the holder - once that's done on both sides, you will be ready for the so-easy-its-almost-unbelievable fitting of the headlight bulbs. Dead easy, just twist and fit. 30 secs a side.