He held various positions within the Arlington group of companies with a particular focus on asset and liability management until August 1995. Mark joined Ashtenne in 1995, assisting with the formation of the Ashtenne Industrial Fund in 2001, and became Managing Director of the Ashtenne Industrial Fund in June 2004. Following the sale of Ashtenne in June 2005, Mark joined the executive board of Warner Estate and remained as the Director responsible for the Ashtenne Industrial Fund and its regional offices.