You see a lot of Mastercard/Eurocard plastered on store-fronts in the UK.
If you try to get a cash advance, even at an ATM that has a similar symbol on the back like STAR or Cirrus, you may not get any cash. It worked for me with my Wells Fargo MC at LGW but not at LHR or in town at ATMs. Talking to Wells Fargo customer service didn't help, they said "Yes, any machine with the Cirrus or STAR symbol will issue you cash." Suprise!
Anyone else have a similar problem?