Yes, ford mondeo 2006 model last year replaced both fronts. Two years earlier ford galaxy 2001 model, replaced both rears.Although in both cases only one broke.
So you can write off Vauxhall, Saab, ford, VW, seat, Audi, Skoda. based on just vauxhall and my Fords.
But who else could you write off a list of possible vehicle suppliers? based Again on such a minute number of people experiences compared to the 100,000s of that specific vehicle sold? In your case Surfer I didn't see one post concerning the Astra? but even if i did
How many Astras are out there and exactly what is the failure rate? And which car company has never had a failure ?
These topics led to more questions, than actual answers, i am afriad to say.