Most people in the UK use in wall micros like the Fibaro or the Aeotec nano.
This gives you two options.
You can either put the micro someplace where there is a neutral, typically at the ceiling fitting, or there are even a couple of models of micros that don’t require a neutral wire, although you may have to add an additional device called a “bypass” if the load on that circuit branch is not high enough.
You can also use the lightwave RF second generation. with the free IFTTT service as an. integration method, although that might introduce a bit of lag.
Have you had a chance to look at the UK lighting FAQ? It covers all of these options and some more ( The article title is a clickable link)