Please note that the offer excludes domain names and domain name renewals

It really is free of charge to these organisations and includes pop3 emails, webmail, php scripting, asp scripting, unlimited webspace and unlimited bandwidth. There are no renewal fees!
What is not included are the domain name costs and domain name renewals and extras like traffic management packages, databases etc.

I am an administrator for Explosion Entertainments CIC  which is a Community Interest Company with the primary function  of helping charities and charitable causes with their fund raising events.

See http://www.explosionentertainments.org
Explosion Entertainments offer a free service to charities and charitable causes. It seems to be a natural extension of what we do to offer free website hosting for the charities and charitable causes registered with us who do not have a website or have limited funds available for website hosting

So Explosion Hosting has been setup as a separate organisation and part of what we do is to host the websites from these charities and charitable causes registered  with Explosion Entertainments.