Hi Geraint,
Thanks for your kind welcome and the information. I appreciate your advice on not rushing to buy a sword. I had read that you shouldn't polish a blade yourself, which is quite understandable, especially after watching videos of real polishers in action with sharpening stones. From the auction statement that was provided to them by the vendor, it was surrendered by an officer, so i'm hoping it was in good condition. They state its been in the same family since then so hopefully the blade will not have been used to chop wood! I'm not too bothered by the fact that the blade is out of polish as it's more of the history of the sword than having it looking like new. It's also at around £420 at the moment and my max is £600. I'm not sure if that's a good deal, but the sword in general looks in reasonably good condition from what i can see of it. I#ll contact the auctioneer and see if they can send some close ups of the blade.
Many thanks again for your kind words and advise. I'll let you know how it goes and hopefully if everything's ok, i'll post some pictures if i'm lucky with the auction.