It seems to me that all legislation by the British Parliament regarding fundamental rights give the power to determine the meaning of those laws to the Secretary of State or the courts, and, occasionally, to a quasi-autonomous non-governmental organisation or the like. None of them, so far as I am aware, depends upon a plebicite. This applies to Conservative government legislation as well as to Labour government laws, so I think I can say, in answer to your question, All of them.

Referenda here happen as often as ducks' teeth fall out, but when they do take place, they have no binding force: the government is free to ignore the will of the people if it wishes. I can imagine that many Conservative politicians would be comfortable with that.