Lakes (Radioactivity) Mr. Wigley asked the Minister of Agriculture, Fisheries and Food what alarm level he has set in relation to radioactivity in fish in lakes in England. Mr. Gummer Levels of radioactivity in freshwater fish in English lakes liable to be affected by artificial radioactivity continue to be kept under careful surveillance. On the evidence available to date, the Government sees no need to seek to restrict the consumption of such fish.