There are many coincidences and spurious correlations in the world. It's informative to propose a falsifiable mechanism behind a correlation which can be tested independently.

I could reframe your hypothesis in a falsifiable way such as "perhaps ending lockdowns in the UK caused individuals to spend more time outdoors or in open air restaurants rather than smaller closed doors activities such as dinner parties", or "perhaps ending lockdowns in the UK caused people to spend more time in other locations rather than large shared ventilation apartment complexes".