Just thought i'd share this with you all.
My Father-in-law has just bought a brand new Astra estate that has the electric parking brake set up.
He went shopping the other day and as he walked away from his car, he was told by a passer by that his car was rolling away !
He ran after it and managed to slow it down a little before it hit some railings at low speed/impact, but its put some marks in the bumper..!
So he's been intouch with Vauxhall who are looking at getting it sorted for him (paint and bumper repaired & possible causes).
They are aware there maybe problems with the electric parking brake, not only the Astra's, but also the Insignia !
Seems we have Deja Vu with Vauxhall and handbrake issues