In reply to Malt_Loaf:
Seconded with Elegy - the bold bit of slab is about 5a/b and is great. Further along, there's also Smear Test (6a) and Chalkstorm (5c) to progress onto.
Sundowner at Froggatt (E2 5b), just right of Sunset Slab - which is probably bolder than all of the above (!).
If you're over east, drop in at Black Rocks and get on the Railway Slab boulder - probably a polished horror these days, but was good value as a 15 foot 5c slab, which seemed to get harder with every move. With a mat, definitely a good option.