How to make the perfect scone

The whole batch of scones cooked according to 6 different recipes Photograph: Felicity Cloake Sophie Grigson's scone recipe made with sodium bicarb Photograph: Felicity Cloake Photograph: guardian.co.uk Leiths' scone recipe made with self-raising flour Photograph: Felicity Cloake Photograph: guardian.co.uk Marcus Wareing's scone recipe made with self-raising flour and baking powder Photograph: Felicity Cloake Photograph: guardian.co.uk National Trust scone recipe made with self-raising flour and lard Photograph: Felicity Cloake Rachel Allen's scone recipe made with sodium bicarb and cream of tartar Photograph: Felicity Cloake Photograph: guardian.co.uk Leiths scone recipe made with self-raising flour Photograph: Felicity Cloake A buttered and bejammed scone in its natural habitat on a floral print plate Photograph: Felicity Cloake Photograph: guardian.co.uk