The question is who is on top. Parliament, HoC and HoL and the Queen, or a Court made up of unelected justices. The HoC can introduce a law that forbids the ten year old SC, a court of appeal only, from making judgements on various issues. It can also get rid of the SC just as it established it......
And for the record, Parliament is Sovereign, which is precisely what the SC ruling affirmed.