Yes, but tidal lagoons operate 24/7, and can be turned on or off to match power demand. That does not apply to nuclear or wind. With one it can supply base load but is not flexible, the other is entirely dependent on the wind which means one day it is supplying 50% of our power and the next 5%.
It is this flexible power generation, currently met by gas that has been completely lacking in all the plans for meeting our future energy needs reliably. More wind farms just make the problem more acute.
It is typical of all our political parties and their puny leaders that they do not understand the problem or the solutions, they just make glib promises about windpower, because it sounds good and are utterly lacking of understanding of the greatest crisis threatening the planet.
Currently the greatest problem we face in tackling global warming is filling the flexibility gap, how can we vote for parties that simply do not understand the problem, let alone the solutions.