E30 Zone

When I have the clutch pedal push down say at traffic lights after a short time the clutch seems to engage and the vehicle starts to move forward, on normal driving gear changes everything works as it should.
Would this be a faulty master as not 100% sure.
Thanks in advance.

Depends if you are losing fluid from the reservoir tank.
If the level isn't going down, then it's the master cylinder, but if it is, then it's more likely to be the slave.
Either way, it's recommended that you change both.