My Brompton is now two and a half years old and used every day.
On the free service, about nine months after I bought it, 'On Your Bike' found the folding frame hinge pins worn and sent it back for them to be replaced. Excellent service I thought.
Seems likely that it needs doing again. Don't want the thing to collapse on me. But how much play is too much? I believe it has to go back to the factory so presumably expensive?
Also, if the pins wear, does the frame eventually wear out as well? Or do they use larger pins?