His company, the property group Allied Commercial Holdings, financed the purchase of Shell Mex House in 2002 and sold it in 2007.
Dellal had a net worth of £4.6 billion, making him one of the richest men in England during his time.
He owned the Dalton Barton London fringe bank, which he sold to Keyser Ullman for £58 million.
[6] He set up Allied Commercial in 1974 with Stanley Van Gelder, with whom he worked for over forty years.
One of their deals was the flip of central London's Bush House in 2004, which made £75.0 million within two years.