Herbal infelicity

Two weeks ago ("A gift to Pfizer", here) the IPKat presented Pfizer with information concerning the San Ling Chinese Medicine Centre in London's New Oxford Street, which was proudly displaying in its window an advertisement for "Herbal Viagra". The Kat doesn't know if Pfizer has done nothing, or whether it secured the removal of the sign but that the offending message has returned. Either way, when he passed the shop window again this evening on the way to Tottenham Court Road tube station, he couldn't help notice that the same trade mark infringement was plainly visible. Can someone who acts for Pfizer give his client a nudge ...

Right: it may be a pure coincidence, but a Google Image search for "herbal viagra" leads you to Herb Viour ...