Chancellor of the Exchequer of the Lord Chancellor (as seen in several of the portraits depicted below). In recent times, it has only regularly been worn at Coronations, but some chancellors (at least until the 1990s) have also worn it when attending the Trial of the Pyx as Master of the Mint. According to George Osborne, the robe (dating from Gladstone's time in office, and worn by the likes of Lloyd George and Churchill) 'went missing' during Gordon Brown's time as chancellor. Although the Kingdoms of Great Britain and Ireland had been united by the Acts of Union 1800 (39 & 40 Geo. III
Introduced species of the British Isles are susceptible. The grey squirrel is a carrier of the squirrel pox virus which kills red squirrels but not grey squirrels. The European crayfish is susceptible to crayfish plague which is spread by the introduced signal crayfish. Unlike some other environmental problems such as pollution, the effect of an introduced species is not a single event. Once a species has been introduced to an island, the problems may persist and escalate as the species spreads further. Coypus "(Myocastor coypus)", large semi-aquatic rodents native to South America, were introduced to the British Isles in 1929 when fur farms were set up