Cannot fully parse these:-
27 Across - "General agreement has Office for National
Statistics involved in this event". I have CONSUL as the answer.
34 Across - "Changing out of uniform, shapeless, in allotment*. For this I have METAMORPHOSING.
Brad, your CENSUS is vindicated, so many thanks! Also a big
thank you to Malone for his explanation of the two clues, which I thought weren't at all straightforward!