I gave the following presentation in London on Tuesday. Banks, payment providers and consultant firms represented themselves at this informal forum (example: Barclays, Amex, Visa, Mastercard, Epay).
I'm happy to say that I got many questions, which means that the topic of cryptocurrencies was a real conversation starter.
The presentation covered not only Bitcoin payments: I tried to get the point across and explain what it is, why it's great, even going so far as to bring up money = debt and friends.
A special thanks to the "History" page on the Bitcoin Wiki and Laszlo's forum post on Bitcointalk buying pizza for 10k :-)
Check it out here:
https://bitbargain.co.uk/bitcoin-presentation/