Thanks everyone for your response to this.
It sure seems like the Whitworth is good value for the money, and thanks to this thread, I have learned a lot more about them.
I must admit that I'm still not feeling quite right about the fact that I've bought one though.

I broke several of my own rules with this purchase.
First, I did not intend buying ANY more rifles for a while.
Second, I swore that I would only use doubles for the rest of my hunting life.
Third, I bought the rifle sight unseen.
The main problem with number 3 is that I usually won't buy any rifle untill I've handled it to see whether I do really want the thing but more important to check the "feel and fit." Bit like choosing a woman!

Anyway, I should have it in my hands before Xmas if the paperwork goes through ok.
A friend, who does know what he's looking at regarding rifles and especially mausers says it appears to be unfired and in excellent condition.
I really don't need it and am not sure if I will get to use it much as thesedays I would much rather use a double.
But I have a "special" birthday happening in a few days time so I guess I'm allowed to buy myself a little present like this?

By the way, anyone who visits here regularly should have little trouble guessing the chambering!