The habit of not back-announcing records is seriously irritating, and all DJ's are guilty of it. I remember Simon Bates playing a record every day for about a week, and I liked it from the first play, and on the Friday he played it twice in succession and never said what it was!!! AAAAAARRRRGGGHHHHHHH!!!!!
I remember Julie Burchill writing in the NME decades ago about Steve Wright talking over the end of every record he plays, she thought he was in the employ of the PRS, ensuring that no recording is ever done of records on his show - proof that he has always done it.
But never forget, it's 'The Big Show', so obviously he is far more important than any transient pop group who grace the gaps between his worldly wisdom for the masses.