The problems included:
Changing a bunch of things in OSM from things that still seem to exist (e.g. https://www.vagabondwines.co.uk/locations/victoria ).  
Use of a contact website on Google Sites(!) suggesting an edit by a schoolchild rather than a genuine marketing company. 
Use of a name that matches a different company: there is apparently a marketing company with this name, in Slough: https://glanzmarketing.co.uk/contact-us/ .  I suspect that they are not related to this edit.
