trophy window catches

I've got a broken sliding stay on the Trophy's offside high-top window. (the long narrow window above the settee) I'm not sure where to go to find a replacement. Any ideas?

don' t know if it helps...... but i just use a small screw and put it a small way  into the hole in mine and it stops it sliding back. Easy to put in and remove x

Thank you Daaisy; I am currently doing something like that. I'm still interested in finding a replacement part if possible.

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I think you've probably got the flat sliding type with a thumb screw to keep it in position. I doubt if still available from AS but worth a try. Otherwise search 'window stay' on eBay in 'motorhome and caravan parts', you'll see a multitude of different types, hopefully you can spot one that will do as a replacement.