The Super Pacs is a good example - it does sound like the Tories are (worryingly) going down this route.
Labour (incumbent) have mostly been quiet in this HEAVILY remain-voting area, with a leaflet or two highlighting a "People's Vote". The LibDems have parachuted in a Tory defector, and have been absolutely going all out with the campaigning around "Revoke Brexit".
The Conservatives have been quietly content to stay out of the way and watch the non-Leave vote split between the former two.
Labour had no chance this year due to a shift in demographics, not to mention the fall in Labour vote share