If your bicycle has a manufacturing defect we will replace the defective part free of charge if we are notified within five years (in the case of the frame) or two years (in the case of other parts) from the date of first purchase of the bicycle.
The Brompton is for use on roads and well-made paths. It is not designed for cross country riding: this can overstress the frame, and anyway the tyres and wheels are unsuitable.
Full warranty terms and conditions are available to download.