«London's Place in the UK Economy, 2005–6» (PDF). Oxford Economic Forecasting on behalf of the Corporation of London p. 19, novembre 2005. Arxivat de l'original el 2006-05-25. [Consulta: 2 gener 2017].
«London's Place in the UK Economy, 2005–6» (PDF). Oxford Economic Forecasting on behalf of the Corporation of London p. 19, novembre 2005. Arxivat de l'original el 2006-05-25. [Consulta: 2 gener 2017].