Having campaigned to remain in the E.U., I voted to trigger Article 50, in response to the clearly expressed wish of the electorate. It must now be my duty as an MP to try to ensure that Brexit is as smooth as possible and that there is a sound legislative framework in place to bring this about. A chaotic departure is in no-one's interest.
Ties of loyalty play an understandably important part in how most MPs interact with their own party and the supporters who have elected and sustained them in their careers. As I know personally it is the strain put on those ties which constitutes the most unpleasant aspect of being at variance with one's own party line.
Contrary to the myth that the U.K. respects decisions of the Strasbourg court but many other adherent states do not, the convention and Strasbourg court judgements have proved a highly effective tool in protecting and developing human rights in countries with no tradition of the rule of law.