Direct bank transfer wouldn’t be reversible I believe. If they pay from their bank to yours, and they can do it in Sterling, then should be no worries and no cost to you.
Credit card on the other hand could be reversed. That said I don’t think you’d be able to receive a credit card payment. Some cards may offer a money transfer service (Barclaycard do), but these have to be to an account in your name. Unless it’s different in Holland. They’d likely be paying fees though, and an exchange rate fee, or you will.
As much as I dislike PayPal, could they not pay via that. They may not need an account if you do a money request to them. Watch out for high PayPal exchange fees though. If they pay in Sterling it will be okay, or if you receive in whatever their currency is (Euros I guess) you’ll end up with a Euros balance so long as you request in Euros. Does mean you’ll be hit with exchange fees if you want to convert it, or on the other hand you can use the Euro balance for other transactions.
Another is Paym/Pingit services banks provide. Not sure if they work with foreign transactions though and even so may be exchange fees involved if not in Sterling. Similar to PayPal, just send a request for money. Or they can use such a service at their end and send money to your mobile number and you cash in the money via a link sent by text.
