WATCH: Behind-the-scenes at Mercedes' Brixworth factory

One of the key pillars of the success enjoyed by Mercedes in Formula 1 has been their High Performance Powertrains division based at Brixworth.

Mercedes HPP aced the new turbo hybrid engine formula in 2014 as the works Mercedes squad crushed all before it in F1 over the next eight years, winning 15 of 16 championships.

With power unit suppliers now restricted in what developments they can bring to the car, the race is on between them to extract ever increasing gains from a smaller pool of potential, with Mercedes still fighting at the front with their HPP units.

McLaren, Aston Martin and Williams also receive their engines from the factory.

Check out what goes on behind-the-scenes at Mercedes' Brixworth factory in the video below!