Richard Armitage related charities
[updated August 2020; possibly missing a few]
In 2020, Armitage donated publicly or stated support for Theatre Artists Fund and Fleabag for Charity and Captain Tom / NHS and Australian Red Cross.
In 2019, Armitage donated publicly or stated support for The Woodland Trust.
You can donate directly to a charity Richard Armitage supports via his JustGiving pages (that I am aware of):
Salvation Army UK [note: I am passing this link on without an endorsement myself; explanation.]
Cybersmile [also linked without my own endorsement; explanation.]
Action for Children / Urban and the Shed Crew
In earlier years, Richard Armitage has also supported:
Fundraiser for Sarah Dunn (no longer seeking funds).
The Disasters Emergency Committee (Bangladesh Cycle Appeal)
ALS Bucket Challenge (this benefits any ALS / motor neurone disease charity of your choice — this one has a good rating in the U.S.)
Christchurch Earthquake Appeal (no longer actively seeking funds).