I have morning coffee with a group of four or five friends, most of us have a coffee and a croissant/ danish to start , then a second coffee. We stay about two , two and a half hours until it starts to fill up with lunch time trade.
Compare the income from our table to the income from yours.
Think about staffing costs, £10.00 ph, overheads : rent, utilities, council tax, cleaning, raw materials, loan repayments etc.