The Mayor will be trying out the new east London Overground extension this morning.
The new line from Clapham Junction to Surrey Quays, marks the completion of a £1.5 billion project to create an orbital service circling the whole of the capital.
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YouTube superstar Alfie Deyes got a sense of how far he has come when thousands of fans descended on his latest book signing in London.
This weekend you can do take a look inside some of London's most iconic buildings.
The family of a father-of-three from East Ham have made a fresh appeal to catch his killer 20 years after he was murdered.