I have been doing some work on a ZenCart store based in the UK. The default currency is pounds and in various places the pound symbol was showing as an HTML entity instead of the actual pound symbol. To resolve this issue simply change the HTML entity to the actual symbol.
Pound HTML Entities: £
Pound Entity Name: £
Pound Entity Number: £
I ended just pasting £ into the currency interface and this resolved the issue. To make this change visit your ZenCart admin, select Localization from the top navigation, and then select Currencies from the drop down. This will open the default list of currencies where you can modify the Currency Code, the Currency Value, and the Currency Value. After highlighting GB Pound and clicking edit just add the £ to the Symbol Left field to resolve your issue.
More HTML Entities:
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