Pros
I started in the Holborn office in London before moving to the new offices at Ludgate and spent nearly 1.5 years at Hitachi Rail. Personally I really enjoyed it as my role changed massively in my time there which was only possible as the company was growing so quickly. I worked in the Sales and Marketing team and the people were great, I loved some of the projects I got to work on and everyone worked as a team - which I loved. My role focused on delivering a new project and I would have been looking forward to new projects after this except for me the travel to the office was really long so I found something similar closer to home. I would definitely recommend working there though - I had a really positive experience.
Cons
Things move really quickly as there was so much to deliver in a short space of time, if you don't thrive in that type of environment you might struggle with the pace of things. Overall I didn't find many negatives with my experience and if the office was in a different location, I would have stayed on with Hitachi.