Shirley trained in Leeds and qualified in 1992 as a registered general nurse.
During her career, she has worked in general surgery, A&E, elderly care and care for young disabled people.
In 1999, Shirley specialised in angiography at Bradford Royal Infirmary. In 2006 she joined the specialised interventional angiography team at Spire Leeds.
In 2012 Shirley completed a Diploma in Therapeutic Counselling. She uses her counselling skills when pre-assessing patients undergoing coronary angiography, pacemakers and cardiac ablations.