Happened to me MEKO on the motorway - 3 month old car, 60 MPH impact etc.
I insisted, as I always do, on using a main dealer bodyshop - used A F Nobles, Penicuik - VERY good bodyshop. You have a right to choose where it goes, but may not get a courtesy car.
However, phone Nobles and ask them about "Helphire" - you are entitled to it.
Brian