The Honest Sausage. Inside the park near the Royal Observatory, this delightful little café is a great pit stop for a traditional lunchtime snack. It specializes in straight-down-the-line, traditional sausage or bacon sandwiches, all sourced from an organic, free-range farm in Gloucestershire. And if a porcine snack doesn't curl your tail, you can opt for cake or coffee instead. Pavillion Tea House, Blackheath Ave., Greenwich Park, Greenwich, London, SE10 8EJ. 020/8858–9695. www.companyofcooks.com.