How much money do I need to show in my British bank account for a non-O visa application?

When applying for a non-O visa, particularly for retirement, you need to show a balance of £18,000 in your British bank account if the application is being made from the UK. It's important to note that the 'O' in non-O stands for 'other,' which indicates that there are various types of non-O visas. It's advisable to check the specific requirements on the embassy website based on the type of non-O visa you are applying for.