I was browsing through the ORBs from UK National Archives for 304 (Polish) Squadron for May 1945. I was surprised to read that as the war in Europe ended they were receiving Wellingtons equipped with sono-buoys (High Tea). I knew they were fitted in late mark Liberators and used on operations but that was the first time I had seen sono-buoys linked to Wellingtons.. Anyone have information on the fitting in Wellingtons and if other squadrons were equipped earlier and used it on operations?