Turn signals
If i am reading your post right, i think you are saying that when you want to turn, you move the lever up or down and the indicators(flashers) don't work.
I never realised how different U.K. English and U.S. English were until i joined this forum.
If you have replaced the Hazard Warning light switch(four way flasher switch) in the centre consol which is red with a white triangle on and they still don,t work, it is probably the main indicator and wiper switch (the lever).
To replace it you need to remove the steering wheel. [8D]