This is a link to the Kooth website that I am hoping you have received a letter about. I would highly recommend exploring it with your child so they have another safe space to explore how they feel safely.
This link is to a competition about space run by a company called Setpoint. The children have taken part in workshops at school (often for DT) run by Setpoint and I would highly recommend them.
I have been sent some documents and websites that I will share here so you can look if interested. The first link is from a company run by Jenny Mosley who work on helping children get on together and use circle time to discuss feelings and important topics.
This second link is a company who run history workshops using drama. I have not used them before myself but they come highly recommended. While these workshops are not free, it may be something your children can do and enjoy at home.