Thanks @Philia_Bear and @Spac.
Another question, for anyone really, is whether the rear lights should sit flush against the panels (bumper and rear quarter) or should have a gap? The car in question has the LHS butt against the panels whereas the RHS has about a 2-3mm space (this one also appears to sit a little higher and further outwards). Could this be from factory also? I was expecting, being a Volvo, everything would be precise and consistent.