Bupa staff could arrive on site, test the health of employees and offer the service in clients' car parks. This was to save people having to travel to fixed Bupa sites and take Bupa to its clients.

SES operated two mobile medical units which operated all over the UK. SES managed all locations and scheduling for the vehicles and SES crew managed the vehicle on site so that only a doctor or nurse had to arrive at the site to undertake examinations

SES crew not only drove the unit to site, but also acted as a receptionist for the unit at each location.