WARNING: The following post, with its support of the UK CAA, may upset some viewers.
With regard to the R22 having to have its exits marked on the inside and outside of the aircraft, I agree that, at first, it may appear a little silly....until we view the R22 as just one aircraft among many in the UK
Should we really expect the lowly R22 to be exempt from airworthiness legislation requiring UK registered aircraft to have exits so marked??