Had a brief chat with 'The Motorhome Company' at the Scottish Motorhome show, who supply the above motorhomes. I have no relationship with the company but talking to someone over lunch who had bought a motorhome from them, rated them highly. The link to their website is:-
https://www.themotorhomecompany.co.uk/
Might be an alternative to Marquis.
https://www.themotorhomecompany.co.uk/
Might be an alternative to Marquis.