Everything from the impact of a helicopter pad to threats to great crested newts and Roman remains will be up for discussion on June 4 when Dyson’s £250m expansion plans are discussed by Wiltshire councillors.

Councillors are recommended to approve the development at Tetbury Hill, Malmesbury, which has been widely welcomed by the town as a way of creating up to 3,000 jobs but is causing fears over traffic and parking.

A report to the Northern Area Planning Committee on the change of use from agricultural to employment land says permission will only be granted if the company agrees that road improvements are completed before new buildings are occupied.

It also states worries about increased traffic in Beuttell Way and crossing the road at Tetbury Hill next to a housing development have been largely solved by an agreement on traffic movements with Dyson.

Plans have also been agreed for a new pedestrian crossing just south of the junction with Beuttell Way to help with crossing Tetbury Hill.

Dyson has said it will create 200 extra spaces and is trialling a shuttle bus from Chippenham to Malmesbury.

The planning application for outline approval for a phased development of commercial buildings, a helipad, indoor sports hall, car parking, roads and footpaths also goes into detail about archaeological findings and reveals the discovery of Roman remains, which would need recording and investigation.

An environmental report has found that breeding great crested newts live in ponds on the site and some would die when their habitat is destroyed – but it is likely the necessary licence will be issued by Natural England.

Badgers are also likely to be disturbed during the development work and setts might have to be closed under licence.

The meeting will be held at Monkton Park, Chippenham, from 7pm on June 4.