I really hope this is still being considered / worked on; it seems like such a shoo-in ‘killer app’ for giving customers power over trash subscriptions like gym memberships as well as being a security boon that no other consumer-level UK bank accounts (apart from Revolut premium) seem to offer, as far as I can tell?
As much as I obviously hope this ends up happening and being offered to all Monzo customers, being able to create virtual credit cards is a feature I’d consider getting Monzo Plus for, especially if it included good management features others have mentioned (auto-deletion after a certain time, pre-set spending limits, etc)
Edit: Apparently this is already listed in the 2019 Monzo Plus roadmap and I didn’t notice until after I posted this, so that’s promising.