The Brompton is a medium reach o accept fenders and 35mm wide tires.
The second picture show clearly the adapter between the fork and the caliper that lower the caliper bold attachment.
Ti Parts Workshop propose this kind of adapter to mount eeBrakes on a Brompton but it can be used with other short reach calipers.
Yes, its a show stopper if you want a front block. For the eeBrakes, TPW has also a kit that moves the cable output from the top center to the bottom left.
eeBrake complete kit with bottom left cable output