These two moths cheered me up as I worked through an absolute multitude of Large Yellow Underwings, Setaceous Hebrew Characters et al this morning. With the help of Richard Lewington, they seem to me to be a Lesser Treble-bar and its form fimbriata. My W,T&L is an 2003 edition but it notes that the form had been found in Oxfordshire, and perhaps this has increased (I've tried an initial Google, and will do more when time permits - I also want to check out the meaning of 'fimbriata' which seems to be used for a fish, a cactus and even the Broad-bordered Yellow Underwing).
Both moths were perched on the inside of my trap bowl which makes photography hopeless, at least in my hands, but I managed to entice them on to an eggbox flap. I know that my ID record is wobbly to say the least, but am I right this time? (btw I appreciate that the LT-b and the Treble-bar may not be separable via a pic like mine). Martin Wainwright, Thrupp, Oxon