Please feel free to donate to your favourite racial equality organisation! I'm based in Edinburgh but am originally from the US, so I've tried to provide a mix of UK and US options. Most should accept international payments.
Here are a few of my personal recommendations:
Runnymede Trust
A UK independent race equality think-tank aiming to challenge inequality through democratic dialogue, policy, and practice.
https://www.runnymedetrust.org/projects-and-publications.html
United Families & Friends Campaign:
Raising funds to support families of victims of state violence in the UK including deaths in police, prison, mental health and immigration custody.
https://www.crowdfunder.co.uk/united-families-friends-campaign
NAACP Legal Defence Fund:
A longstanding legal organization in the US fighting for racial justice through litigation, advocacy, and public education.
Black Visions Collective:
A trans- and queer-led social-justice organization and legal fund based in Minneapolis-St. Paul.
https://www.blackvisionsmn.org/
National Bail Fund Network: