Thanks Rob, Oliver and Bitt for your recommendations and suggestions.

I think that I will "spend" my remaining bids with Bidnapper and move on from there - esnipe is very fairly priced, especially for low priced items and I can see me using that to queue bids when I'm at work too. I'm pleasantly surprised at how cheap it is.

Hammertap appears to be based upon a monthly/3-monthly (and so on) subscription and that doesn't work too well well for me (please feel free to correct me if I'm wrong on this). Also, I think that for the times I'd use it, eSnipe would work out cheaper. As an example, tonight I bid on a set of wiper blades at £6.50 or thereabouts and a keyring at £2.75.

Of course, jBidwatcher is the one I'll try and use if I spot the auction at home and I know my PC will be running, these days it runs almost 24/7!