Share Content Published November 1, 2016 ©Si Barber. Moral rights asserted. ? Si Barber 07739 472 922 Cambridge constabulary, firefighters and emergency services conducting an exercise of dealing with a chemical accident and spillage. Picture shows: Firefighter with hose. accident cambridge chemical closure constabulary danger emergency equipment equipped exercise firefighter firefighters firemen fumes hgv hose hoses lorry officers police practice practise proctective recovery rehearse road services spill spillage tanker water