Dear Mum: Emma writes to her NHS frontline worker mum and tells her that she's her hero
Dear Harvey: Matthew wants to thank his best friend Harvey for giving him the courage to be himself
Soham writes a letter to his dad who left the country when Soham was four years old. Their relationship isn't close, and Soham wants to update him on what he's missed in the hope of reconnecting.
Identical twins Jessica and Josephine write a letter to their mentor Debbie-Ama. Missing their regular meetups with her, they want to thank her for pushing them to be the best versions of themselves.
Actor Kieron Richardson and husband Carl have three-year-old twins who haven't seen their grandparents since lockdown began. He writes to his in-laws in Wales to let them know how much they're missed.
Radio and TV broadcaster Clara Amfo's friend Salma lives in Amsterdam. Clara writes to her to catch up, reminisce and recognise that, while a lot has changed, their friendship is as strong as ever.