Karl is supported by the following brands:

Elixir Strings: http://www.elixirstrings.co.uk/
Laney amps: http://www.laney.co.uk/
Hayden Amps & Cabs: http://haydenamps.com/
Wampler Pedals: http://wamplerpedals.com/
Paul Reed Smith Guitars: http://prsguitars.com/

Thanks to all and others for all their support and trust through the years.

Other useful links:
www.musiciansunion.org.uk/
www.worknotplay.co.uk