Marks and Spencer has brought back a fan-favourite sandwich after hearing how shoppers had been mourning the loss of the festive staple . The retailer has reintroduced its honey mustard ham hock sandwich to its Foodhall range, giving customers another option when browsing the shelves for a quick lunch. Filled with honey mustard pulled ham hock and paired with a generous layer of Cornish Cove cheddar mayonnaise, the sandwich has already sparked excitement among food lovers, with many heading to