Complex sentence: It was his second trip to England and he was a celebrity so he called a press conference shortly after his arrival, a decision which would have been normal business practice by Tin Pan Alley standards but appeared very brash to the British public.
Split into simpler sentences: It was his second trip to England, so he called a press conference shortly after his arrival. This decision would have been normal business practice by Tin Pan Alley standards, but it appeared very brash to the British public.