Thanks. Unfortunately the English MOT emissions test report only provides information on CO, Lambda, and HC at fast idle (and only CO at normal idle) so I do not have the other gas profiles.
Is the fact that the first fast idle test gave a reading of 88 for HC which then increased to 120 in the second fast idle test of any significance?
This morning while looking at the hoses I found a hose on the idle actuator/throttle body that was not fully in its connecting rubber elbow. Infact it was within1/8th to a 1/4 inch of the end. I have put it firmly in place now but don't know what the pipe is or its potential relevance.