Five teenagers have been arrested on suspicion of arson over a fire that tore through lorry trailers at a kitchen appliance factory.

Cambridgeshire police said “about £2m” of damage was caused by the blaze at the Whirlpool UK headquarters in Peterborough on Thursday evening.

The force said five boys aged between 15 and 19 were arrested on Friday on suspicion of arson. They remain in custody.

About 50 firefighters worked to bring the blaze under control when it was at its peak and police said 48 trailers were damaged.

The site is the UK head office of Whirlpool, the household appliance company which owns brands such as Hotpoint and makes tumble dryers and washing machines.

A Whirlpool spokesman said nobody was injured in the incident and no buildings on the site were affected.

The trailers contained spare parts, the spokesman added.

The arrested boys, one aged 15, three aged 16 and one aged 19, are being held at Thorpe Wood police station in Peterborough.

Anyone with information about the fire is asked to call police on 101.