That also means that the second power-door fitted carriage rake has now been delivered. The days of slam-door stock on the Moor Street to Marylebone services must surely be numbered.
That was the plan for 82302. Chiltern blue livery for mark 3s is dead in the water. All mark 3s are going to be silver now (modified slightly from the WSMR version).
It's also mentioned in the image description