Make your own casserole as I do. Simply coat your chicken in flour and fry for a few minutes in olive oil on medium heat until lightly browned on all sides. Remove the chicken and place in the slow cooker. In the same pan fry finely chopped garlic, onion, leek, celery, carrot (all finely diced) and potatoes (diced a bit bigger), fry all of this on medium heat for about 7-8 minutes, then add plenty of chicken stock, salt and pepper, good splash of worcester sauce and a couple of tablespoons of Branston pickle and colmans mustard, simmer gently for a few minutes then add to the slow cooker. Cook on low heat for as long as possible over 6 hours, if you like you can add dumplings (I used Sainsburys own herby ones in packet, just add water), add these about one to two hours before serving, turning them once, enjoy!