Thanks for your help...bought a vaporiser on the weekend and it worked a treat, slept right through the night and much less coughing went on as well!
I'm glad to hear that the vapriser helped - sometimes they work, sometimes they don't, it's a bit "hit and miss".
At home, we use a nasal aspirator (basically, a bulb you squeeze, stick up the nostril, and then let go to suck out snot) and sometimes we use otrivin junior to help relieve nasal congestion.