You might not have heard of veteran product designer Kenneth Grange but you’ll almost certainly be familiar with his designs.

These include Intercity 125 trains, rural post boxes, London black taxis, Wilkinson Protector razors, Parker pens and Kenwood food mixers.

A new retrospective at London’s Design Museum gives an insight into the development of Grange’s products over the past 50 years.

The exhibition includes drawings, photos, prototypes and finished products. Some of the most fascinating designs were never produced, including a proposed Channel Tunnel train.

I was amazed by the scope of Grange’s work, and the number of items designed by him that have become part of my daily life.

Once you’ve visited the show, you’ll never use a razor, jump into a taxi or pick up a pen again without thinking about all the work that’s gone into designing it.

Kenneth Grange: Making Britain Modern is at the Design Museum until 30 October 2011