The sandwich was invented in England, by the Earl of Sandwich, so it seems only fitting for National Picnic Month, I share my favourite Three Classic British Sandwiches. Cheese & Pickle, Cheese & Onion and a Crisp Sandwich The sandwich was invented in England, by the Earl of Sandwich, so it seems only fitting for National Picnic Month, I share my favourite Three Classic British Sandwiches. My trio of British sarnies are: Cheese & Pickle (and it has to be Branston pickle!); Cheese & Onio...