[b]#4209 found @ 14:31:00, cache 11 of 15 today, geostreak Day #177.[/b]
Having stayed overnight in Oxford, I had a busy day and took the long way home to Essex via Uffington to pick up an old cache for my Jasmer Challenge, some Challenge caches around Little Brickhill (giving two new DT squares) and a trad near St. Albans to fill a third DT square.
Spent ages looking in entirely the wrong places here. Eventually the penny dropped! Thanks for the DT, it fills an empty square for me.
See attached image for my qualifying caches.