Electric guitar for a looked after child I'm working with (Eynesbury PE19)

I'm working with a looked after child who lives in a children's home. He loves heavy metal and needs an outlet. He would like to learn to play on an electric guitar. I have an amp and a lead of my own to give him but trying to source an electric guitar. I'm exploring charity options but thought I'd add her incase some had an old one knocking about after getting an upgrade. Thanks