Tonight I started a kit that's been in my stash for a couple of years at least. Somewhere along the line I seem to have discarded the box, save for a cut-out of the 'colour profiles' off the back of it. I think this is the Italeri kit, possibly formerly produced by Esci.
PS - In the interim, I've got hold of a modelling mag (Airfix Model World, Mar' 2016) in which a guy builds a 1/35 Maultier Ambulance. Although the chassis is rather different, the inner detailing of the ambulance should be a great help to me in completing the interior of my own much smaller model.