the future king , 32 , became the most senior member of the royal family to work as an ordinary paye employee when he became a pilot for east anglian air ambulance .
the second in line to the throne will be working throughout april in three sites , cambridge , norwich and gloucestershire airport .
the duchess of cambridge , meanwhile , will largely be based at their london home kensington palace .
royal staff have already ruled out using a helicopter to transport william back to london .