The Isle of Man is a self-governing Crown Dependency of the United Kingdom The head of state is currently Queen Elizabeth II, who holds the title of Lord of Mann. The Lord of Mann is represented by a Lieutenant Governor. The island is not part of the United Kingdom, but its foreign relations and defence are the responsibility of the UK Government. Although the United Kingdom does not usually interfere in the island's domestic matters, its "good government" is ultimately the responsibility of the Crown (that is, in practice, the Government of the United Kingdom).
... and its Three legged flag symbol ...
Interestingly (?) a similar motif is used on the flag of Sicily.
P.S. First have used multi-coloured columns for their 387 timetable from Poole.