Instructions:Panasonic e-shop is normally not the cheapest, but sometimes you might get quite a good deal from them.
Anyway, here are three vouchers for digital cameras purchase:
DMC-FX3 for £20 less: enter code DECVFX3
DMC-FX07 for £30 less: enter code DECVFX07
DMC-FZ50 for £40 less: enter code DECVFZ50
Not sure if it is possible to combine vouchers but you may try also use DECV10 (10% off everything).
These vouchers are valid 'till end of January '07