Here are a few of the more commonly known ones. Some are often used with just the first word (e.g. "Use your loaf") while others are more commonly heard as the full expression (e.g. "What a north & south he's got").
Plates = Plates of meat = Feet (as in what you walk on, not the unit of measurement)
Barnet = Barnet Fair = Hair
Loaf = Loaf of bread = Head
Mince pies = Eyes
North & South = Mouth
Frog = Frog & toad = Road
Brown bread = Dead
Mutt & Jeff = Deaf
Rabbit = Rabbit & pork = Talk (generally meaning to talk profusely)
China (as in "'Allo me old China") = China plate = Mate
Whistle = Whistle & flute = Suit
Dog = Dog & bone = Phone
Trouble = Trouble & strife = Wife
Saucepan lids = Kids
Bristol(s) = Bristol City/Cities = Er..... You can work this one out for yourself! It refers to a part of the female anatomy.