I would argue that if you feel that it has enhanced your role as a member of Parliament, maybe you should.
I cannot, in good conscience, say that it's okay for lobbyists to bring individuals whom they lobby on travel.
Some of the groups you've mentioned are likely not registered lobbyists. Let's make this very clear: I regulate only lobbyists—those who are registered and paid to lobby members of Parliament.
I do not regulate groups that are not registered to lobby, so there will be some travel that can continue.