I'm not doubting your spotting/identification skills, I live near Baldonnell and 254 was doing circuits today.
LOL!!
Well I saw it in silhouette out of the corner of my eye, through the blinds of an office window as I was supposed to be doing something other than 'spotting' and appeared to be in a turn, so it may well have been a Defender, I hadn't considered it. I did think it had a T tail though, so equally, it could have been one of the calibrators.
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