Hi LoveT,great find and on my patch too,Im often birding in the Keyhaven/Pennington area
A Nationally Scarce Notable B category insect is thought to be found only in 31-100 10km squared areas of the national grid.A Notable A is in 16-30 of these,most of the categories are assigned like this going up to RDB(Red Data Book)species found in 15 or less of these squares.Jason