Simon King of Whitefriars Church, Rushden, and an employee of the East of England Ambulance Service, has recently started the Christian Ambulance Network to to support and encourage Christians in the ambulance service, given that no such group existed already. More details, including contact details, are given in the attached poster: CAN Poster July 2017 v3
More generally, there are many other Christian professional groups that exist to help church members live out their faith at their place of work. Do you know if a group exists for your trade or profession? If not, might it be right for you set one up, as Simon has done? Many of them are listed at Some of them are based locally, such as the Association of Christian Teachers (at Northampton) and the Christian Police Association (at Wellingborough).