The mesh grill on my TF has become rusty and spoils the appearance of the front. Does anyone know where I can obtain (mail order) suitable stainless steel mesh to replace it, or any ideas to improve the existing one

Hello Richard - Chris Humphreys had the same problem with his TF last year.
I will ask him to email you his source.
Main problem he had was folding the the 'kink' down the middle, stainless steel being a touch springy.

Thanks Chris, I will wait for the info

You could get it ‘sand blasted’ and paint it black.

You could sandblast it and paint it chrome-silver but I think most people's experience of this would be that it doesn't last more than a year or two (you cannot adequately clean and re-protect the areas where the mesh wires overlap so rust takes hold again)

So better to fit new mesh - either chromed steel or better still stainless (for which Chris Humphreys has emailed you details)