Hello Monzo !
What about partnering with charities (such as WWF, Cancer McMillan etc…) which the customer would choose and for every transaction made on a Monzo card, 0.01p would be gifted to that charity. When looking at the space digital payment has taken in our life that would be more effective than knocking doors to doors or running thousands of miles in sport sponsored events.
How much transactions are done in a day at Monzo ? If we are 500,000 users by assuming 10% of us would enter that scheme and we roughly use our cards a minimum 3 times per day that gives you around half a million charity pot …
what do you think about that idea 
?
Thanks
Jean-Baptiste