Preheat the oven to 180C/350F/Gas 4 and line a muffin tray with paper muffin cases. In a large bowl, sift together the flour, baking powder, salt and cinnamon and then stir in the sugar.

Have a muffin tray ready lined with muffin papers. Preheat the oven at 200°C/400°F/gas mark 4-5. Sieve the flour, salt, baking powder in a bowl. Stir in the sugar. Rub in the butter until it ...