Beresford, Philip; Watts, Robert, eds. (24 April 2016). "Rich List". thesundaytimes.co.uk. Archived from the original on December 31, 2010. Retrieved 24 April 2016.
Beresford, Philip; Watts, Robert, eds. (24 April 2016). "Rich List". thesundaytimes.co.uk. Archived from the original on December 31, 2010. Retrieved 24 April 2016.