David and Simon Reuben
Early life and career 
Born to British-Jewish parents, their extended family ran various businesses. The family returned to London when the boys were teenagers, allowing them to be educated in British secondary schools.
The brothers increased their fortune during the 1970s and 1980s in both metals trading and property. Nearly half their fortune is in liquid assets such as cash and bonds. They avoid publicity, but provide some details about their interests on their personal website.
Metals business 
In the early 1990s, the brothers invested in the Russian metals market, financing significantly the production and distribution of metals. The Reuben's became the world's third-biggest producer of aluminum.
At its peak, their company, Trans-World Metals, and its associates controlled five percent of the world's aluminum output. When Russian aluminum smelters were incapacitated by debt, Trans World entered into tolling arrangements with factories in which they paid for and delivered raw materials in return for finished aluminum, which it then sold for profit. The company's investment in Russia was $1.5 billion (£870 million), with global sales in 1995 topping $8 billion.
Due to their former status as Russia's biggest foreign investors, they are subjected to significant press scrutiny. During their ten years in the country the Reuben Brothers did business with some unconventional characters. They also came across several members of the country's new oligarchy, including Roman Abramovich, now owner of Chelsea F.C.
In 2008 Reuben Brothers returned to the metals business acquiring the metal trading company, RB Metalloyd, and formed a new dedicated natural resources platform, RB Resources. Reuben Brothers have expanded their mining interests and have a portfolio of mines in Morocco, Indonesia and South Africa
Present activities 
By 2000, the Russian business environment was turning sour for them and they sold all their Russian assets and focused their business activities mainly in the UK property market, where they have a substantial portfolio of debt-free assets. With others, they have been involved in financing a number of major acquisitions and also have investments in technology companies.
Real estate 
UK properties owned by Reuben Bothers include: Millbank Tower; the John Lewis Partnership headquarters in Victoria; the American Express offices also in Victoria; Carlton House SW1; Academy House on Sackville Street; Connaught House on Berkeley Square; Market Towers; prime Sloane Street shops; and Cambridge House, the former premises of the Naval and Military Club, which comprises six freehold buildings which have a planning consent for a six-star hotel and private members' club. Others investments and developments include:
- Merchant Square: a 1,800,000 sq ft (170,000 m2) development scheme of offices and flats, key to the regeneration of the Paddington area of London
- Park Plaza Hotels & Resorts: 50/50 joint venture in a new apart-hotel under the 'art'otel' brand in Hoxton, City of London
- Hampton House: demolition and redevelopment of the 1960s office block opposite Tate Britain. Designed by Foster & Partners, the project features a mix of apartments and an apart-hotel on the River Thames next to the Riverbank Park Plaza hotel
Aldergate Investments 
Via both companies, the Reuben Brothers continue to be one of the largest investors in luxury leisure group Orient-Express Hotels. Other holdings include:
- Hotels: the company own significant interest or co-interests in the hotels sector, covering Orient-Express Hotels and Travelodge Hotels
- Retail: Co-investors of D2 Jeans and Blue Inc clothing retailers, with retail guru Sir Stuart Rose
- Banking: investors in both Luup and Metro Bank
- The Wellington Pub Company: the largest free-of-tie pub estate in the UK with approximately 850 tenanted pubs
- Global Switch: the largest wholesale carrier neutral data centre provider in Europe and the Asia-Pacific region
- Horse Racing: Arena Leisure and Northern Racing merged forming ARC (Arena Racing Company) which represents 40% of UK fixtures and a 45% stake in At The Races (ATR), the broadcaster taking UK and Irish racing to domestic & international audience
The Reuben brothers cling tightly to their privacy. Simon Reuben, three years younger than his brother David, has given only one interview to a British publication in his entire career and that was more a case of finding himself in a room with a journalist and having to make polite conversation.
In 2005, they won the Variety Club 'entrepreneurs of the year' award.
Both Reuben brothers are married with children. They both follow Chelsea FC.
- David and Simon Reuben
- Profile in The Guardian