How much is 1 GBP to 1 can?

Excuse me, could you please clarify the unit of measurement you're referring to when you say "1 can"? As far as I'm aware, the British Pound (GBP) is a currency unit, and it's not typically directly converted to a measurement like "cans". Perhaps you meant to ask about the exchange rate between the British Pound and another currency, or perhaps you're referring to a specific commodity or good that is sold in cans and you're interested in its price in GBP? Could you please provide more context or clarify your question?