Lesley is CEO/Executive Principal of Cambridge Primary Education Trust, a five-school MAT comprising of Histon and Impington Junior School, Histon and Impington Infant School, Hatton Park Primary School, Trumpington Park Primary School and Somersham Primary School. She began teaching as a PE/Science specialist in a secondary school in London, before moving to a middle school in Hertfordshire, and subsequently being promoted to Key Stage 2 leader in a Cambridgeshire primary school. Lesley then became Deputy Head in a large primary school, followed by Acting Headteacher of a primary school leading her to secure the post of Headteacher at Histon and Impington Junior School in 2001. She became a National Leader of Education in 2009, and subsequently her Ofsted graded Outstanding school was designated as a National Support School, paving the way for the formation of CPET in 2012. She plays a leading role regionally in the self-improving school-led system and is the East of England and North-East London representative on the Teaching Schools Council, seeking to raise attainment across the region.