© Licensed to London News Pictures. 20/09/2011. Polzeath, UK. Members of the Royal Artillery exercise their horses in the sea and along the beach at Polzeath Beach, Wadebridge today (20/09/2011). The King's Troop Royal Horse Artillery (known as 'The Troop') are holding their annual summer camp at Polzeath, Cornwall. The unit which is based in St Johns Wood, London is Her Majesty The Queen's ceremonial Saluting Battery. Photo credit: Mark Bowes/LNP