i'm currently sitting in a busy LHR clubhouse. As a first timer I am impressed but haven't got the wow factor yet. Service is a tad slow, the waiters seem to be buzzing around a select few. nice food definitely an improvement on BA's offering, even T5. The 4th glass of bubbly is going down nicely.
If it's your first visit and you didn't get the wow factor as soon as you walkied in, I don't think you ever will.
Have a safe flight.