XPLMonkey says you can use RFXCom to automat them...
@hpoom tipped me off about Home Easy1 who make easy to fit RF light switches and sockets, sounds nice and simple and convenient, but does not support central control for full home automation. So an intermediate solution until you full commit to rewiring. But then I found XPL Monkey2 who have some info and advice on how you can use RFXCom3 components to automate the HomeEasy kit. Not everything is compatible, but it looks like some of their stuff can be computer controlled. Not sure what can and what cana't at the moment, looks a strange mix but more to read here2...
Paul Clarke's blog - I live in Hythe near Folkestone. Wed + dad to two, I'm a full-stack web engineer, and I do js / Node, some ruby, other languages ect ect. I like pubbing, parkrun, eating, home automation and other diy jiggery-pokery, history, tree stuff, TV, squirrels, pirates, lego, and TIME TRAVEL.