Sadly, all insurances have gone up, it's all done on probability, the vibe probably involved in more accidents than a S!
I recently changed from a Preface lift LX to a SLX, same year, transmission, engine etc, (mid policy) for 6 months I was charged £78 more, basically the same vehicle.
I questioned this and the response was the SLX costs more to repair, (that rev counter must be pricey), it's total rubbish, just an excuse for the insurances companies to grab more money.