Can't change flush ceiling light bulb

[WhatTiler]

I've got a really stupid problem. A flush ceiling light fitting needs a new bulb but I can't get the old one out. See the photo attached.

I've managed to get the glass disc out, but it looks like the inner ring with 3 small lugs needs to be prised out to get to the bulb. I've tried that and it won't budge. Should I try harder, or is there a secret I haven't figured out?

I really don't want to break this because it's not my house.

 

[PrenticeBoyofDerry]

The central insert with the three lugs on, will twist out, normally a quarter turn anti-clockwise does the trick.
Use the lugs as leverage and it should just drop down.

 

[ban-all-sheds]

But surely twisting it is the first thing anybody would try?

 

[333rocky333]

Them fittings are prone to overheat and warp, thus making the thing impossible to turn, you may find it easier to remove from the ceiling and work on it, on the ground.
I have had some that you have had to bash it round with something.
There not an expensive fitting if you damage it.

 

[flameport]

I've managed to get the glass disc out

That glass disc is part of the lamp and is not intended to be removed separately.

Also looks like a dichroic lamp has been fitted which will have caused overheating.

 

[WhatTiler]

Thanks everyone for your advice. Yes, they do turn, but the one I was trying to get into is thoroughly seized up. Next time I'm at the property I'll take a hammer!