[DTV]

At least the NBH blocks have the excuse of being physical - they'd have to get new ones made to replace them/have those fitted, but I can't imagine it'd be impossible for them to do. The end boards, however, are completely ridiculous - it's been long enough that these aren't just programmes produced before the switch, and as mentioned above it wouldn't take much effort to update.

Though, of course, these were both things that they got right in 1997. The logo on TVC was replaced pretty much as soon as physically possible and endboards were edited so that pretty much all programmes broadcast from the 4th onwards had the new logo on. And that was in a largely pre-digital era when not everything could be done at the simple touch of a button! Several BBC regions even went to the trouble of editing the new logo into their existing titles for the weekend bulletins despite planning to introduce wholly new titles the following week!

The 1997 rebrand was really the benchmark for how these kinds of rebrands should play out
Non-physical logos (idents, online, endboards, news graphics, etc.): Day one
Key public-facing physical logos (HQ exterior signage, sets/props seen on air): As soon as physically possible
Non-key public-facing physical logos (regional exterior signage, OB trucks): Within a set but short timeframe
Non-public-facing physical logos (internal signage, ID cards): Upon natural replacement

Considering they executed a similar thing far better twenty five years, there is really no excuse for the sloppiness seen this time. It is genuinely hard to think of much that slipped through the net in 1997 - the only thing I can recall is a few pieces of internal BBC signage and the shot of David Frost stood next to a camera with the 1988 BBC logo on in the Breakfast with Frost titles that remained in use until summer 2003.