He passed away in February 2015.
After university, Rosenfeld joined Schroders property funds division, but soon left to join a smaller firm claiming he felt restricted by the 'big-company mentality'. In 1986 he was invited to join Land Investors as a director by David Garrard and in 1989 the two of them established Minerva.
When Rosenfeld went to leave the company, in 2006, its market value had risen to around £500million, allowing him to sell his stake for £100million. 
Recorded by the Electoral Commission:
|Date||Name of donor||Amount||Donated to||Subsidiary (parties only)|
|20/08/2001||Andrew Rosenfeld||£10,000.00||The Rt Hon Kenneth Clarke QC MP|
|03/10/2011||Andrew Rosenfeld||£121,440.00||Labour Party||Central Party|
|30/01/2012||Andrew Rosenfeld||£200,000.00||Labour Party||Central Party|
|18/05/2012||Andrew Rosenfeld||£2,054.30||Labour Party||Central Party|
|18/04/2012||Andrew Rosenfeld||£150,000.00||Labour Party||Central Party|
|15/10/2012||Andrew Rosenfeld||£90,000.00||Labour Party||Central Party|
|07/03/2013||Andrew Rosenfeld||£100,000.00||Labour Party||Central Party|
|05/09/2013||Andrew Rosenfeld||£100,000.00||Labour Party||Central Party|
|28/02/2014||Andrew Rosenfeld||£100,000.00||Labour Party||Central Party|
|15/08/2014||Andrew Rosenfeld||£100,000.00||Labour Party||Central Party|
In 2006 he was involved in the Labour Party's 'cash for honours' scandal, where a legal loophole was found that meant donations to parties had to be declared but loans didn't. In March 2006, a number of people nominated for peerages by Tony Blair had been found to have 'loaned' money to the party using this loophole.
- Marcus Williamson Andrew Rosenfeld: Businessman who made a fortune from property then became a noted philanthropist and Labour Party donor Independent, 13 February 2015, accessed 2 March 2015
- Electoral Commission, Donation Search, accessed 2 March 2015