Katy and Alistair live next door to Brighton – think there is a PM facility now ….somewhere for Jean to try.
They may be able to recommend who they use.
There wont be an Exsis specialist or perhaps anyone necessarily who has serviced the Ducato element, so you probably need a commercial garage that doesn’t mind servicing motorhomes. Reluctant to try to name one over another because I am not from that area – think that I have read good reports of Johns Cross
Fred