Cartwright is set to walk on fire this week to raise funds for Tsunami victims and the North London based Children's hospice, the Haven House Foundation, ahead of Saturday's Metro Capital Challenge.
He won't be alone on this hot pursuit; hundreds of daring fundraisers will join in, hoping to raise some �30,000 for charity.
They have all made the choice to walk over burning wooden embers at 1200 Fahrenheit - and believe it or not, they say you can achieve this without any pain or injury!
The fearless walkers will be trained by top Firewalking Masters to master their mind and go beyond what was previously thought to be impossible.
The �30,000 target is to be split between two charities; the Haven House Foundation - Children�s Hospice located in Woodford Green, Essex and secondly the Disaster Emergency Committee for the Tsunami victims.
The Firewalk is �150 per person to enter and this money can be raised through sponsorship by your friends, family, colleagues etc, or alternatively you may choose to pay �150 to participate in this Challenge of a lifetime.
Cartwright commented: �There are probably many easier ways to raise funds but the cause is very worthwhile and I won�t be backing out. I�ve done a few odd things in my time and this is right up there.�
Our office staff have all sponsored me and I�m hoping every Broncos player will also throw in a few pound as well. I just hope I am around to collect!�
Click here for more information on the FireWalk
Supporters attending this Saturday's Metro Capital Challenge between London Skolars and London Broncos will also have the chance to raise funds with a bucket collection to be undertaken at New River Stadium.
London Broncos v London Skolars: 2.30pm Saturday 5th February.
Tickets for the London Broncos vs. London Skolars are on sale now via the London Skolars office on 020 8888 8488
Prices are set at �10.00 for Adults, �5.00 Concessions and �25.00 for a Family of 2 Adults and 2 Children