Hi JGAnderson,
Our stock reports are designed to function in multiple regions and currencies. By default, the currency symbol is determined by the default language and region setting in your browser. If you change your browser's default language to English (United Kingdom), the report will display the pound sterling symbol instead of the dollar sign.
You can also hard code the currency symbol into the report by modifying the format string on the field.
The default '{0:c2}' uses the browser's language and region to determine the symbol used. If you want to force the report to be generated with the pound sterling symbol, then you can change the format string to '{0:£0.00}'. I hope this helps.
--Audisho