You need rear brakes for tight turns ;p
Woody, you need a cable operated handbrake for an MOT, as a legal requirment. and typically a fly-off type rear brake lever (hand operated) is hydraulic, so if you cant find hydro with cable handbrake, use two sets of smaller calipers.
On mine, ive got some AP twin pot small-ish hydro calipers for the fly-off rear brake, then have the standrad set-up (cable) for parking brake which I will likely remove after MOT (as the car will do about 50 road miles a year, all of which will be testing over the Black Mountains!).