I owe them a few pounds from a service this summer. Given the cost of international wire transfers I had planned to drop cash into an envelope on a UK visit this summer, but it was derailed due to a death in the family. Anyhoo. If anyone is getting ready to settle a bill there perhaps we can arrange to have it appended to your bill? It’s a very small amount. 10 pounds or so, +/- ...then I could PayPal it to you in turn, together with my gratitude! Please PM me.