For those slightly smaller in stance and looking for a TT frame, looks like PX have reduced the 52cm 'Sarto built' carbon TT frame they've had for a while down to £200 (at least it looks to be carbon, doesn't actually say).
Are they proprietary? It's TT, why should I be surprised! Thought I also spotted the funky TRP 'direct mount' that's not Shimano-style direct mount too, which has caught me out previously.
For those slightly smaller in stance and looking for a TT frame, looks like PX have reduced the 52cm 'Sarto built' carbon TT frame they've had for a while down to £200 (at least it looks to be carbon, doesn't actually say).
https://www.planetx.co.uk/i/q/FRPXMONTT/planet-x-mondo-tt-frame