Weekly totals of variants in United Kingdom
Week 36 37 38 39 40 41 42 43
NB.1.8.1 75 65 93 58 51 10 2
XFG 334 346 387 306 272 74 9
XFP
Total 436 433 526 409 346 87 12
NB.1.8.1 % 17% 15% 18% 14% 15% 11% 17%
XFG % 77% 80% 74% 75% 79% 85% 75%
XFP % 0% 0% 0% 0% 0% 0% 0%

Last Updated: 21st October 2025 16:44 BST — Local:

Acknowledgements

We gratefully acknowledge GISAID and the many data contributors around the world for sharing SARS-CoV-2 sequences.

This analysis makes use of the Nextclade CLI.
Aksamentov, I., Roemer, C., Hodcroft, E. B., & Neher, R. A., (2021). Nextclade: clade assignment, mutation calling and quality control for viral genomes. Journal of Open Source Software, 6(67), 3773, https://doi.org/10.21105/joss.03773

Special thanks to Josette Schoenmakers ( @josetteschoenma.bsky.social on BlueSky @JosetteSchoenma on Twitter) for the table concepts.