The British National Bibliography (BNB) is not a catalogue of the British Library’s collections, it consists of descriptions of:
- books and journal titles published or distributed in the United Kingdom and Ireland since 1950, and electronic publications since 2013
- forthcoming books, registered through the Cataloguing-in-Publication (CIP) service
You can read more about the content and ambition of the larger project, which is in beta, at https://bl.natbib-lod.org/. That’s also the address to search which is what I did rather than trying to understand the minutiae.
Search a surname, place or topic of interest and see that turns up. For recent publications restrict the year range to 2022 to 2023. I did find some interesting new-to-me books for places in my family history
I did find the system a bit quirky, perhaps owing to my misunderstanding, perhaps because “The system might be unstable. We are updating our dataset to improve your experience.”