Firefighters set up a 250 metre cordon after a minor leak was reported from a liquid nitrogen tank at Wornal Park, off Menmarsh Road, Worminghall in the Aylesbury Vale area around 1.45am this morning.

One appliance and crew from Thame, one from Wheatley and two officers attended.

The cordon was later reduced to 25 metres and then five metres after it became clear there was no risk to the public. The incident was left with the facilities manager at the business park.