I always thought M.P.'s were self employed looked for an answer, everything about them vague and it seems to be a grey area, I did find this:-
https://www.quora.com/What-is-the-em...of-Parliament#
Without any proof of their employment status, I think we can conclude that,
The majority of M.P.'s work for themselves.
It's time they took a cold hard look at themselves and started working for the rest of us.