He's been knocking out heat shields for the pre-facelift Modulo lips, I recall mention of him working on these for the pre-facelift ITR lip a few months ago too.
No companies in the UK actively produce anything like this as far as I'm aware, so your best option would be to approach someone like Fiberworxs who has a DC5 shell and/or bumpers and see if they can do a one off for you.