After service in the Regular Army, Glynn has lived in Warton since 1998 and has worked as a consultant anaesthetist at Coventry and as an Army Reservist, serving in both Iraq and Afghanistan as a medic. Glynn has been an active trade union member all his adult life and currently holds national office in the British Medical Association. Glynn supports a number of medical charities, is an armchair follower of international rugby and a devotee of the works of the late Sir Terry Pratchett. He has three adult children who have flown the nest and four large dogs; the dogs will often be seen out campaigning with him.