Rory Cellan-Jones and Derek McManus
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Next generation 4G mobile network on trial in London

The mobile network operator O2 has started testing the next generation 4G mobile network in London.

It will allow much faster access to the internet for mobile users, although a full rollout is not expected until 2013 at the earliest.

Rory Cellan-Jones spoke with Derek McManus of O2 during a test of the network, to see what improvements are on the horizon.

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