Paul was recently contacted by Kevin McGuire who is a Resuscitation Officer on Tyneside and wanted to tell him about his 5 year old friend Josh Dawson.
Josh is fighting a cancerous grade 3 Ependymoma (a brain tumour) and he is about to undergo radiotherapy.
Josh has one dream - to visit Legoland in Florida.
To help increase awareness of the efforts to fulfil Josh's dream Paul has invited Kevin to play a song with him backstage at the Hammersmith Apollo gig on December 19th.
The video of the performance will then be hosted on Josh's website
later in the week.
The hope is that the attention the video receives will help raise the money needed for the trip.