"Missed Doge? Get Floki," declared a wave of advertising on London's public transport system last month.
The posters, which appeared on Transport for London (TfL) trains, stations and buses, advertised a meme cryptocurrency named after Elon Musk's Shiba Inu.
But the advertising campaign has prompted calls for TfL to ban crypto adverts, with elected officials in the British capital calling for an end to adverts for "risky and unregulated investments".
In a written question earlier this month, London
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