This advert I came across by chance, but I'm still not certain if it's Victoria Shalet (aka Harmony from The Queen's Nose) or not. It's an advert for BT during the time when they would of been doing the ET BT adverts, but this is an advert from London, where Shalet lived. It's very like her, and what makes me suspect it could be her is the opening line from the advert. It begins "How can we live together in peace and harmony..." Was that a in joke on the character she played in The Queen's Nose? I have no idea, but I've included it here anyway, just in case it is her.