One of them blossomed, but the buds are still curled up pretty tight, so I've had no luck with Google's Lens.

Timing and branch structure reminds me of Flowering Quince.

Chaenomeles ....common name Japanese quince.
Flowers can be white red, pink or orange...depending which one you find.
It might be Chaenomeles speciosa nivalis?
https://www.google.com/search?...

Chaenomeles x superba Jet trail is another white one that is sold in UK...but cannot be sure that is the one in your pic

https://www.rhs.org.uk/plants/...

January (2023)


March (2023)


I find myself somewhere in-between right now.

This is why I like to have the different sprouting and decaying stages of a plant's lifecycle.

February 2024: