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Early trading in London, and the FTSE 100 which edged up at the open has now gone negative. 

It's at 6,781.50 which is a fall of 11.24 or -0.17%.

Four of the top five risers so far are mining companies. 

The increase follows yesterday's fall in mining shares, prompted by a fall in the price of metals. 

Last week mining stocks climbed strongly off the back of Donald Trump's election victory which raised hopes of increased infrastructure spending. 

Property investment firm British Land has said that its strategy ahead of the referendum has paid off.

Chief executive Chris Grigg said:

"The UK's decision to leave the EU marked the start of a prolonged period of uncertainty for the country, for our industry and for our occupiers.

"Ahead of the referendum, we positioned the business for a range of outcomes with modest development exposure, high occupancy with long leases, and robust finances.

"These features and our continuing actions mean that the business has proved resilient in the first few months following the referendum, evidenced by our improved underlying profit and the continuing volume of leasing activity."

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Housebuilder Barratt Developments says trading is continuing "well, with ongoing strong demand".

In its latest latest trading update it says overall market conditions remain healthy, with the group trading well since the start of the new financial year.

"This has been another good trading period for the group," says chief executive David Thomas. "Consumer demand is strong supported by good mortgage availability. We are mindful of the potential for economic uncertainty created by the outcome of the EU referendum. However, market fundamentals are robust, and we remain a housebuilder of choice," he added. 

London is one of the places where sales rates compared to last year remain "softer," however.

The company's sales rates in the northern and central regions are strongly outperforming the same time last year, it says, but, market conditions in London at higher selling prices remain more challenging". 

"To mitigate these risks we have taken pricing action on a number of our sites in London," it says. 

The trading update covers the period between 1 July to 13 November.

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Taylor Wimpey chief executive Pete Redfern has completed a large-scale review of the UK housing market.

He says declining home ownership among young adults over the last 12 years is not down to a lack of supply, but "long-term macroeconomic factors".

"It's well understood that mortgages are more difficult for them to obtain, and [that's] not necessarily wrong in a balance of risk, but making life difficult for them. But also, relative incomes have fallen significantly over that period."

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What about Trump policies that would be negative for world trade? A 45% tariff on Chinese imports for example?

Diana Furchtgott-Roth says: "He'll try and enforce the trade agreements. Every spring the White House publishes what they call a 'Section 301' report detailing the violations of intellectual property laws by China, Russia, India, other countries, and then the White House does absolutely nothing about it. President Trump is going to do something about it and enforce the trade laws that our partners are breaking."

But will protecting intellectual property be enough to bring back jobs?

She says lowering corporate taxes and more "energy development" will stimulate the economy. 

"Right now there are many federal rules that prevent fracking, oil drilling, energy development. Those are very stimulative, especially in parts of the rust belt, Ohio, upstate New York... there are many places where more energy will stimulate the economy."

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Morrisons has launched a new service in conjunction with Amazon.

From today, Amazon Prime customers in parts of London and Hertfordshire will be able to order a full Morrisons shop online using the Prime Now app. 

Orders will be picked at a local Morrisons store and delivered same day by Amazon either within one hour for £6.99 or in a free two hour slot. 

Morrisons started a wholesale service supplying Amazon customers earlier in the year.

Aero engine firm Rolls-Royce has said it is making "good progress" on a turnaround plan, and said its 2016 outlook is unchanged, external.

Chief executive Warren East said: "We have made significant progress over the last twelve months implementing the findings of our operating review, including key changes to the management and structure of our company."

In November 2015, after five profit warnings in less than two years, the engineering giant started to restructure its business.

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If you're already thinking about your first cup of coffee of the day, just how much are you expecting to pay?

New research shows - perhaps not surprisingly - that how much a cup will cost you depends on where you live.

Service Partner One, which manages office space, has created a world 'Coffee Price Index' for cities.

It reckons the UK's most affordable coffee is in Dundee, where the price per cup averages £1.43 - that's based on drinks bought in cafes and workplaces, and on ground coffee for brewing at home.  

It's followed closely by Liverpool, Sheffield and Edinburgh. High street prices in London were 21% higher than in Dundee, but there was less disparity between the cities in home-brewed and workplace-made coffees. 

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There is an idea that Donald Trump will have to borrow a lot to spend a lot, but Diana Furchtgott-Roth says that's focusing on the wrong bit of his policies.

"We have the highest corporate tax rate in the world at 39%. He wants to lower it to 15% - that's going to dramatically increase the earnings that are brought back to America, causing a stimulus."

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The stock markets have gone up following Donald Trump's US presidential election win, but we don't have that much clarity about what a Trump presidency will look like.

Diana Furchtgott-Roth is an economist and volunteer adviser to Trump's 2016 presidential campaign. She's also served as chief economist to the US Department of Labor, and was chief of staff to George W. Bush's economic advisors.

Can Trump bring back growth to the US economy without blowing out the US deficit?

"Definitely... he... wants to lower taxes and reform regulations, and this is precisely along the lines that House speaker Paul Ryan in Congress wants to do. So, when you have a Republican Congress and a Republican president, and they both want to do the same thing, you can see that the legislation will pass. And just as in Britain lower taxes spurred economic growth, it can also do the same in America."

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More on the news that Snapchat, the app that allows users to share photos and videos before they disappear in a few seconds, looks set to float on the US stock market. 

North America technology reporter Dave Lee says is has been "an open secret" that the firm is looking to float.

"No surprises here, given particularly that Snapchat has been one of the runaway success of recent years, overtaking Twitter... it has 100 million daily users."

Analysts say it's worth around $25bn.

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Asian markets are mostly higher in afternoon trading this Wednesday, following the lead from Wall Street. 

They're buoyed by the strong close in New York and a rise in oil prices. 

Hopes that producers will reach a deal tao cut output have boosted energy firms which have led the rally in Asia. 

The biggest winner in the region is the biggest market, Japan's Nikkei 225, which is up 1.1%. 

South Korea's Kospi and Hong Kong's Hang Seng are making smaller gains of 0.7% and 0.6% respectively. 

On the Chinese mainland, the Shanghai Composite Index is down slightly, and so is Australia's ASX200.  

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The biggest review into home ownership for more than a decade has just been published. 

The Redfern Review by Peter Redfern, chief executive of Taylor Wimpey found that home ownership among those aged 25-34 has fallen by more than 20% in the last 12 years and that the financial squeeze on young people is at the heart of the decline in the number of home owners. 

Henry Pryor is an independent housing expert and he was on Wake up to Money.

The authors of the report are respected and worth listening too, he said, but he told the programme's presenters not to bother reading the review.

We've had lots of housing market reviews over the years, he said, but the answer to the problem is simply "we need some new homes to be built". 

We need to find a way of being able to increase the housing supply and for that we need drastic new proposals, he added.     

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Business sources say the instant photo messaging service, Snapchat, is a step closer to offering shares to the public reports BBC World Service. Analysts say its debut on the stock market - possibly in March - could value the California-based firm at up to $25bn (£20bn). 

Snapchat released its popular smartphone app in 2012 and now has more than 100 million daily users, most of them under the age of 24.

It's a highly attractive group for advertisers - but there's concern that advertising is Snapchat's only significant revenue stream. 

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As we reported yesterday, Bank of England Governor Mark Carney had a grilling by MPs on the Treasury Select Committee - and he took a swipe at politicians in the US and UK who have attacked central bank policies, branding it a "massive deflection exercise". Carney said low investment and demand were to blame and had led to low interest rates. 

Dominic Rossi, chief investment officer with Fidelity International was on Wake up to Money. 

He said: "We have to protect the independence of central bankers and I'm glad he's [Mark Carney's] prepared to do so."

Interest rates are low all over the world, he added, not just in the UK, and that tells you something a more structural is going on in the balance between investment and savings and that is what is driving low interest rates.  

In attacking central bankers politicians are attacking the messenger rather than the message, he concluded.

Welcome to the midweek Business Live.

It's a busy day for the Office for National Statistics. Coming up at 9:30am we've got the latest jobs figures, as well as the third quarter productivity numbers. We'll bring you those as we get them, plus all the reaction and analysis. 

On the corporate front both Rolls Royce and construction company Barratt Developments are due to update the market on how they're doing - that's at 7am. 

Do stay with us for all the latest news.