if you google Shapeways it pops right up. The designer, Tony, I'm pretty sure he's in the UK as well. It's a network of designers all over. When I order stuff, the designs belongs to Tony, so he gets his cut of the sale, but it's farmed out to a Shapeways associate in New York and ships from there. never takes very long, they're quick. And the customer service is amazing. The first landing ramp set I ordered came with 2 left sides of the longest hydraulic ram. sent them a pic of the error...the sent a whole new set, on the quick, no charge. awesome folks to deal with. and if you have questions and you've subscribed to the site, you can email the designers and ask questions. Tony has done the most if not all of the MPC Falcon parts and he's a super friendly and helpful dude.
hope that helps, and again...I love your sidewall set and will be using them for all future builds...but don't tell Tony if you talk to him, LOL