Just outside Paddington is a vast building site - turning a run down industrial area and old railway depot into a major HS2 railway station.
The heat from train tunnels at Old Oak Common could be used to heat water and power central heating of up to 500 new homes that are to be built near to the HS2 station.
Two major new housing communities will be built in London alongside new railway stations, the government has announced.
One of London's oldest train depots has recently become home to its newest fleet of trains -- for the Elizabeth line -- and I've been given a look around the huge site.
The design for what will be one of the UK's largest railway hubs has been shown off for public comment.
A new train depot for the Elizabeth line has been commissioned, ahead of it being needed for the partial take-over of services into Heathrow later this month.
The details for two new stations for the London Overground have been announced, with each of them serving separate branches south of Willesden Junction.
An old railway line currently used for cargo trains could be converted into passenger use, linking parts of West London currently poorly served by rail services.
Over the past few days a steady stream of curious locomotives have been seen on the railways heading towards London. Coming together to mourn the passing of a mighty railway depot.
This Saturday (2nd Sept) will be a rare chance to go onto the site of one of London's larger railway depots, to mark its eleventy-first birthday.
This coming September will be a very rare chance to go onto the site of one of London's larger railway depots, to mark its eleventy-first birthday.
When the future Elizabeth line trains go to sleep at night, one of their bedrooms will be a large new depot being built at Old Oak Common, and next year there is a chance to have a look at the site.