No longer. The Fixed Term Parliament Act was repealed in 2022.
Yes I knew that and I’m glad.
What I meant to say, speaking to people who don’t understand the system, was that Starmer being unpopular won’t necessarily lead to a dissolution with such a huge majority and that therefore the voters will probably not be involved until the Summer of 2029, unless the events in the play/film King Charles III come to life.
In real life, it’s more probable that Tim Piggott would dissolve Parliament than Charles Windsor.