Map sheet number 161 in the OS Explorer map series is the ideal map to use for exploring the southern area of London. The area south of the River Thames is rich in cultural city attractions, open parkland & recreational paths. Highlights of the area include: Kew Gardens, Greenwich, The Thames Path, Twickenham, Chiswick & Chelsea. With this map you will receive a code for use on your i OS or Android smartphone or tablet. Find our more at Mobile Download FAQ. The OS Explorer map for London South is available in both the standard paper version & weatherproof ' Active' version.