James Sleigh

Principal Landscape Architect

Skills and expertise

James has a wealth of experience in landscape architecture delivering projects across all sectors from large scale public realm to small scale sustainable drainage systems (SuDS) and community spaces. He has worked in both the public and private sector in the north and south of England.


Specialist interest

Masterplanning, conceptual design, public realm design and construction detailing.

Career summary

After finishing his degree, James worked in Bradford as a landscape designer delivering community spaces, following his diploma he joined Whitelaw Turkington in Leeds delivering numerous public realm schemes including the £6.5 m Doncaster Waterdale. In 2011 he returned to his home city of Bristol where he worked at local architects White Design as their Landscape Architect. He joined Landmark in March 2017.


Chartered Landscape Architect (2010)

Building with Nature Approved Assessor

DipLA Landscape Architecture (Leeds Met. 2007)

BA (Hons) Landscape Architecture (Leeds Met. 2004)

Diploma in Art Foundation (UWE 2001)


First Job

Washing cars for the local garage


Now known for

His no-nonsense approach



Walking the dog with his sons, family days at the allotment and eating and drinking in moderation