Sir Martin Sorrell, CEO of WPP, told CNBC his company got to a stage of "quarteritis," when the market looks at quarterly results rather than annual results as a whole.

Daniel Morris, global strategist at JP Morgan Asset Management, told CNBC the "fiscal cliff" is an artificial crisis that lawmakers created. They should therefore be able to undo it

Tim Stanley, Historian & Author, Oxford University argues that there is so much uncertainty surrounding the fiscal cliff that 'going over' the cliff could pose a "world of potential pain."

Alan Capper, Head of Credit Strategy at Lloyds Banking Group says that while markets may sell off initially followed by attempts to reach an accord, it could add up to be a buying opportunity.

Geoffrey Yu of UBS says the yen will continue to weaken until 88 against the dollar. But further weakness will be limited unless yields outside Japan move much higher.

Alcatel-Lucent CEO Ben Verwaayen says regulation is holding back innovation in the European telecommunication industry, while the U.S. is advancing rapidly.

Roger Nightingale, Economist at RDN Associates argues the "fiscal cliff" doesn't matter and the U.S. economy will head into recession, irrespective of what Congress and the White House do.

As the cost of 3D printing machines falls, small businesses are increasingly turning to the technology to spur innovation. Louisa Bojesen reports.

Ben Lichtenstein, President, Tradersaudio.com talks about the year-end "Santa rally" and whether the markets can hold onto their gains in the new year.

Ralph Silva, VP of Banking Strategy, HfS Research discusses Barron's cover story which forecasts Europe stocks could rally as much as 20 percent in 2013.

Ralph Silva, VP Banking Strategy, HfS Research discusses whether U.S. politicians can reach a stop-gap solution to the fiscal crisis.

Rolfe Winkler, reporter for heard on the street at the Wall Street Journal, talks to CNBC about why investors have been spooked about RIMS prospects.

John Walsh, a trainee taxi driver and Ashraf Laidi, chief global strategist at City Index, talks to CNBC about the City Index Training Academy which trains people not from a financial background, how to trade.

Simon Colvin, research analyst at Markit, tells CNBC that there has been some evidence that there is less of an appetite to sell short in hedge funds.

Laurence Wormald, head of research at SunGard APT, tells CNBC that going over the fiscal cliff could badly hit US banks and the dollar with things getting worse very quickly.

Martin Young, head of European Utilities at Nomura, tells CNBC that the outlook for utilities is very difficult moving into 2013 with little growth coming from the sector.

Ross Westgate takes you through the European market open, with stocks down on renewed fiscal cliff uncertainty.

John Studzinski, renowned investor and senior managing director at The Blackstone Group, tells CNBC that US lawmakers still have time to agree a fiscal cliff deal as you don't agree a deal until the final hour.

Jane Foley, senior currency strategist at Rabobank, tells CNBC that the stock market has been complacent that a fiscal cliff deal will be reached.