lever taps on the bath.the lever moves back and forth but wont turn on?

The may be as a result of faulty washers ( although this usually result in leaking taps). I presume that water is flowing to other taps in the house, and that a main valve has not been turned off.
You can replace the washers yourself - turn off the mains water, and turn on the tap to drain any water. To remove the tap and get to the washer - flip off the top disc on the tap, locate the screw, undo and then you should be able to take off the lever. You will then need a spanner to undo the rest. Using a pliers you can then remove the insert. Locate the rubber ring and replace with a suitable replacement.

Thomas
May 2009