Assael Architecture was established in 1994, co-founded and owned by John Assael and Russell Pedley. Registered in the United Kingdom and a RIBAChartered Practice. The firm's principal studios are located in London. It is a member of the AJ100, consisting of the 100 largest architecture practices in the UK and ranked by the Architects' Journal in 2014 as the 67th largest practice in Britain. Notable buildings include the Great Northern Tower in Manchester, Tachbrook Triangle on Vauxhall Bridge Road, Westminster, London which won a RIBA Housing Design Award in 2007.