Gruppen er opkaldt efter postnummeret for [[Walthamstow]],<ref name="Herts">{{cite web|url=http://www.hertsandessexobserver.co.uk/East-17-star-Tony-Mortimer-Stansted-family-man/story-21904068-detail/story.html|title=East 17 star Tony Mortimer is Stansted family man|last=Holland|first=Sinead|publisher=Herts and Essex Newspapers Ltd|date={{date|2009-11-5}}|accessdate={{date|2016-5-27}}|archive-date=25. december 2016|archive-url=https://web.archive.org/web/20161225081547/http://www.hertsandessexobserver.co.uk/east-17-star-tony-mortimer-stansted-family-man/story-21904068-detail/story.html|url-status=ok}}</ref> som ligger i Londons [[Waltham Forest]].
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