A Touhou handscroll by artist baba appeared in the British Museum during a temporary manga exhibition from May to August 2019.

https://twitter.com/TouhouHijackLOL/status/1513315427220287493

This was the largest exhibition of manga outside of Japan at the time. Such a large volume would be likely to gather in some Touhou content.
https://www.britishmuseum.org/exhibitions/manga
The individual portraits (by @baba15207048) are viewable here:
Pixiv: 紅魔郷立ち絵11枚　他夏コミ情報 (pool #11851)

https://twitter.com/TouhouHijackLOL/status/1513315430777057281