Sunroof clip

Hello,

Recently bought a MK1 GTI with an aftermarket sun roof,

I am looking for either:
The button pictured 
Or if anyone knows the brand of sunroof this is to look for a replacement

Help appreciated.

I think that Britax may have done a sunroof back in the day. I once pirated one from an Astra for our 505 to give us two sunroofs. Occasionally aftermarket sunroofs are listed on a well known auction site.

Cheers I'll have a look now