Christian doctor loses civil service role A Christian doctor due to take on a key civil service role has lost the position, for asserting that gender is determined by biology, it was reported in July. Christian Concern Dr David Mackereth | photo: ITV Dr David Mackereth, who has worked for the NHS for 26 years, was set to become a disability assessor for the Department for Work and Pensions (DWP). subscribe now Join today to gain access to the rest of this article and many others. more info login If you are already a subscriber, log in to continue. log in access code If you have an access code, enter it here: Go free trial Get free access for 14 days: Sign up Click here to find out how we take care of your personal data.