The British Rail Class 13 was a type of diesel–electric shunting locomotive.

The type was designed in 1965 because of the need to provide more powerful shunters for the Tinsley Marshalling Yard.

Due to Tinsley's status as a hump yard, it was not possible to use a single locomotive owing to the risk of grounding.

So, to achieve the required power, a pair of Class 08 shunters were permanently coupled in master and slave formation, with the slave unit having had its cab removed.

Three pairs were formed as follows: With the end of hump shunting at Tinsley the class became obsolete.