London Mayor Sadiq Khan has been urged to pull all advertising by the Russian state news network Russia Today (RT) from the London Underground.
The network broadcasts an English language channel and recently paid for a series of contentious poster adverts on the tube.
The cheeky ads refer to suspicion of Russian election interference and anti-Russian sentiment more generally.
One reads: “Watch RT and find out who are planning to hack.”
Another says: “Missed the train / Stuck in traffic? Lost a vote? Blame it on us.”
Last month Twitter banned RT and Sputnik accounts from advertising on its platform, citing the US intelligence agencies’ conclusion the media outlets were part of a Kremlin operation to disrupt last year’s US election.