Thanks Paul, unfortunately I live in London and at present my Hybrid Alphard has to pay ULEZ, so it appears that I need to find somehwere thwqt the DVLA recognises to do rolling emissions test, then take the results to the DVLA and have them enter the CO2 emissions on the Log Book. The problem is finding a centre that does a rolling emissions test. I've looked and can't seem to find one. So, any help would be hugely appreciated.