Mark Bridge writes:

Just a few weeks ago WiFi was made available on a number of London Underground stations - yet mobile coverage still stops when you go down the escalator.

So why is it taking so long for us to get mobile phone service on the Tube?

For an insight into some of the challenges and the possible solutions I spoke to Ian Brown, CEO of Axell Wireless. The company is a leader when it comes to providing additional wireless coverage in confined spaces - from tunnels to sports stadiums - and is currently involved in the project to install mobile phone service on the Channel Tunnel.

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Samsung has won a UK High Court case after a judge ruled that the Galaxy Tab 10.1, Tab 8.9 and Tab 7.7 tablet computers did not infringe Apple’s iPad design.

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Calgary-based Poynt, which operates a location-based search and advertising platform, will now send a proposal to its creditors during the next 30 days. Its business will continue as usual during this process.

In this special feature we're talking to Ian Brown from Axell Wireless about mobile phone coverage on the London Underground.

WiFi is now available on a number of London Underground stations - so why is it taking so long to arrange mobile phone service on the Tube?