I recall flying out of Gatwick a couple years ago and the security line I happened to be in was instructed not to take laptops, tablets, phones etc out of our hand baggage as a new machine was being trialled that didn't require it.
Was the trial successful?
As it happened, I was pulled up anyway when the x-ray machine revealed a suspicious object in my bag. I don't think they see many frittate at LGW.