I managed to find the brake I knew I had, but it's a right hand lever I'm afraid. 
I may have a couple of Deore levers, need to check I have both left and right, but should have. They were retired as I replaced the brakes due to a suspected leaky calliper (micro-leak.i heard it referred to), which meant the brakes were quite squeaky despite working and I forgot which calliper it was, hence the set stashed away.