I believe Brompton pedals are the standard thread.
I got through about 3 sets of cheap folding pedals (not those ones, but a similar design) on my folding BSO before it died of old age at about 1200miles. YMMV.
I've used Wellgo QRD removable pedals on my Brompton, so I can a) have a SPD pedal that doesn't stick out and b) van switch to flats easily. The MKS ones are a popular alternative.