Hummm

Well I've now soldered the wires direct to the sensor, and plugged the wires directly into the header on the EasyPIC5 board.

Dht(0) - 4 now reads 38 00 19 00 1F with a hum/256 value of 34.

whilst this seems to of resolved the issues with the breadboard, 34% humidity seems rather low, and quite a gap from the 50% shown on the weatherstation