I have found Codex R/027 to be online:
The images are "processed" in some way to make the bottom script more readable (it's a palimpsest).
Unfortunately they use again protective software that does not allow to download the images. Is this really necessary?
Also there: G/011
and several other, rather unremarkable Byzantine manuscripts.
It would be nice to find 892 (= Add 33277) soon!
Wieland Willker, Bremen, Germany
Last year I compiled an index in four parts to all the BL MSS online: