Addendum: March 4, 2017 The prior Twitter avatar looked similar to the one on the top in the image below. I am satisfied that the newer one can no longer be interpreted as possibly representing someone who is an official regulator within the UK drug regulatory system.
Addendum: March 24, 2017 The newest avatar:
All these tweets are by an anti homeopathy activist, who seems to be posing as a UK authority, between February 10 and today March 3, 2017. To my knowledge, this person is not officially affiliated, or recognized by, any UK drug regulatory agency. Therefore, I would encourage Twitter to ask that this particular tweet activity be curtailed.