Last night and this morning parts of Wiltshire have been blanketed by a thick layer of smoke, caused by grass fires on Salisbury Plain. The Army are persisting with live firing exercises despite the distress it is causing downwind. Today the smoke plumes are reaching Bath and Wells, but last night was the worst due to the wind forcing the smoke down to ground level. At midnight Trowbridge looked a bit like London in the 1950s smogs. This morning, GWR services are being delayed due to Westbury PSB being evacuated as the fire alarms were going off. Some trains cancelled, others severely delayed. (As if we didn't need even more disruption.) Perhaps we need a new delay announcement - service delayed due to artillery fire. Cheers British Army! My returning asthma and I salute you.