If your sofa has started looking a bit tired, your dining chairs are holding onto mystery marks, or the armchair by the window has taken on that dull, lived-in look, you are probably not after a generic cleaning lecture.

If you are trying to keep carpets fresh in and around South Ruislip station, you already know the drill: mud from the pavements, winter grit, coffee drips, rain marks, and the odd bit of general city life ground into the fibres.