Hi lumpy,
The books I have (not for sale) are:
Instruments and Intergrated systems by Pallet- an excellent book, a little too in depth for the ATPL but excellent nevertheless- this is around £32.
Met for pilots by Wickerson- I think. Another excellent book- around £20.
General Navigation by Underdown. Another great book- around £30.
Hope this helps. All these books are available from Transair!