Notanumber

Len Ive just been out to mine to refresh my memory and it is very much easier than it looks.

First that whole plastic plate that carries the connection and all the bulb holders should be separated from the rest of the light fitting. That plastic tang you see a bit left of the letter R needs to be pulled to the side slightly. Theres also a 2nd one like that on the right, about the same distance from the centre. (It isnt quite so easily visible in that photo but it will look similar). The plastic plate then just lifts out. (Relative to your photo, just pull it towards you, away from the fitting).

Withe the bulb holder plate removed you'l be able to see the connector plug is actually an L shaped edge connector. This wont have been obvious whilst the plate was in place.
(Relative to your photo the plug should pull upwards vertically towards the top of the photo). It is only locked by a small piece of flexible plastic molding on the reverse side which will now be visible. Hold this down with the fingers of one hand whilst easing the plug upwards with the other.

The way it's put together isnt obvious but when you know how it goes together you will have it apart and the connectors off in seconds.