Yes, same wording here: http://www.dcrobinson.co.uk/media/MOT Manual Complete - 201701.pdf
"7. Multi fuel vehicles Vehicles which run on more than one fuel(e.g. petrol and LPG) should be tested on the fuel they are running on when presented."
"7. Multi fuel vehicles Vehicles which run on more than one fuel(e.g. petrol and LPG) should be tested on the fuel they are running on when presented."