By Susie Boniface The Ministry of Defence has spent more than £250,000 burying records about blood tests of British troops because of the “legal risks”. Documents show civil servants ordered the cover-up of 78,000 files about Cold War radiation experiments, previously in the public domain. One was a 1958 memo, seen by the Mirror, showing “gross irregularity” in the blood of Squadron Leader Terry Gledhill, who was ordered to fly through the mushroom clouds. Its discovery uncovered repeated orders for blood testing of thousands of nuclear veterans. Campaigner Alan Owen said: “We are certain the …