To convert 50 British pounds (GBP) to Nigerian naira (NGN), you'll need the current exchange rate. As of my last knowledge update in October 2023, the exchange rate fluctuated, but it was generally around 1 GBP = 800 NGN.
Using that approximate rate:
50 GBP * 800 NGN/GBP = 40,000 NGN
Please check a reliable financial news source or currency converter for the most current exchange rate, as rates can vary significantly and change frequently.