Ceutorhynchus typhae
I'd just examined a Ceutorhynchus obstrictus which I'd swept from the same stand of Garlic Mustard when I examined this, and thought this showed more of a rostral channel than that had, albeit only a shallow one. I then went round the houses trying to work out what genus it was before eventually figuring out that it had to be another Ceutorhynchus after all. Once there it was straightforward enough to get to typhae. It was about 1.7mm long.
Ceutorhynchus typhae showing close-up of elytra, Wendling Beck Environment Project (Norfolk, UK), 29th April 2023