A MAJOR route out of Swindon will be closed overnight until next week to allow roadworks to take place.

The east side of the junction 15 roundabout will be closed until August 10 from 8pm until 6am on weekdays only.

There will be no access to the motorway from the A419 southbound.

The M4 westbound exit-slip and M4 eastbound entry-slip will also be closed.