u/Montyfrench

Could anyone please tell me what key signatures the song Night boat Cairo by the British band Madness is written in and any other things that may be relevant to know in the arrangement such as modes or other relevant key changes maybe for example. I’m learning the keys to play it in a band but I would really like to have more of an understanding of what is going on from a theory perspective and maybe some relevant practices. I don’t want much do I? lol, many thanks in advance to any replies!