[wolfie]

Sigma 50-500mm will cost you £725 inc P&P from warehouse express.

As an alternative you could go to digitalrev on Ebay and pay £572 inc P&P. You will probably be charged import duties but you will be able to claim this back from digitalrev.

I know a number of people who have used this company, I have also used them on two occassions and found them excellent to deal with.
On both occassions I just emailed them a copy of the import duties paid and my bank was credited with the correct ammount within days.

Yes they will fit Nikon, but you do need to specify what make of camera. Canon, Nikon, pentax etc.

However be warned they are big and heavy. Having said that my 50-500 is attached to my 10D almost permanently and I do not notice the weight anymore.

Harry