If you live near Queensbury Station, you already know how quickly a sofa can pick up daily life: tea rings after a late-night cuppa, crumbs from a quick supper, pet hair, dust, and the odd mystery mark that appears out of nowhere.

If you need a carpet cleaned quickly, you are usually not planning weeks ahead. Spilled wine before guests arrive, pet accidents on a busy Tuesday, muddy footprints after a damp London morning - it happens.