Roast Lamb & Potatoes with Wild Fennel & Semi-Dried Tomatoes

You will need a few long fresh wild fennel branches to put in the bottom of the dish to perfume it all beautifully. I use a round dish, about 34 cm (13½ inches) in diameter, to cook this in. I like to serve it with a green salad. If you can get crushed dried fennel flowers, use those instead of the fennel seeds here.