Another exciting recent find was this Darby & Co of Clapham Junction cover near the hospital in Kemptown. The star design is very similar to many others, but this is the first time I've seen a Darby cover. Darby is one of the manufacturers listed on the Faded London blog.
This is a most exciting (for me) find round the corner from my house. It's a cover inside someone's gate from a new foundry for me - Frederick Betts, from 33 Skipton St London SE. A couple of doors up the street, a house had railings and a gate which also carried this mark.