Is the image that is populating different than the photo associated with the company record in HubSpot?
You can change the photo associated with the contact or company record (click here for instructions), however if the picture is different than what you are seeing in your portal, can you please send along screenshots of what you are seeing in Gmail as well as what you are seeing in your portal? You can send the photos through this thread or through a private message if you would prefer.
Who is this random bloke and how do i get rid of him?
Sorry for the late response,
Following on from your response I uploaded our Logo, I also changed all instances I could find in HubSpot. We have identified the image as Steve French an ex-director. It is on his twitter feed. (@sgfgee) boxbear twitter has our logo. This image does not appear anywhere else (do a google image search). However, should we have hubspot working on our gmail and someone opens an email it is his image we see?? Where has hubspot dragged it from and where is it cached? He left a year before we started using HubSpot and this image has never appeared on the company marketing.