Bleaching the inside of vinyl??

So far, my interior resto has gone really well, all the vinyl's come up nicely and even the seat fabric is looking pretty good now.

My last problem is the inside of the rear window surround.



I've used a mix of jif / cif and sugar soap, and it's shifted some of the mould, but the rest isn't coming off. I'm thinking of scrubbing some neat bleach in there. Whaddaya reckon, will it clean it up, or will it burn straight through and destroy the fabric from the inside??

Do not use neat bleach!! There is a very good chance it will destroy the fabric.
Try a bio washing powder solution or some Meguiars hood cleaner thats good for getting mould off stuff.
If the mould has been on there a while odds are low on you getting it off to be honest.

Thought it might

I'll give the washing powder a go