I'm in the UK (Surrey) and use CakeBoss.
I started off with a spreadsheet, but found that it was getting more and more complicated to price up cakes, and updating prices was a complete pain.
I purchased CakeBoss around 2 months ago, and although it took me about a week to enter in all my data, now I've done that, it's marvellous 
I can keep track of all costs, quote with ease, have an official looking invoice, and the customer tracking is great too.
Works fine in the UK, automatically loads in £ rather than $, and you can pick and mix between metric and imperial, which is great, as my fruitcakes, marzipan and s/paste are all metric, and the HD recipie is of course in imperial.
I've not found a similar product in the UK, heard rumours that squires were working on one, but not heard anything else.
HTH x
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