petercassidy wrote:

I wonder if it's too small a market?

Yes the inner door thing...I've searched and seen the reference to Travall, but there's nothing on their website.

I'm wondering whether I can dismantle a metal dog crate and use a panel with a door in it to fashion an inner door from. It'll need the side edges bending at right angles to provide a door gap and then use some U bolts to fix inside the body.

The current lockdown might give me the time to have a go.