I think you're right. When I bought the car, there was a split in the paint on the top of the bumper, that I'm guessing had been repaired - possible badly - and it either split on its own accord or when someone had driven into the back of the car. I had it repaired in 2011 after I'd rear-ended someone, but a year later the paint was bubbling, so I had them sort it. No issues since, until someone drove into the back of the car while parked up, which led to this damage. Part of me wonders if this will just happen again if I repair it and someone does the same, so maybe a new bumper is in order. It's just so hard to find a silver bumper for a 54 reg FR at the moment.