AMB Hand Built Boutique Overdrive and Distortion pedal made in Brazil.
 
Has three circuits to produce clean boost, Marshall type tones or Diesel. Very flexible and great quality unit. Looks very cool and comes with original box.
 
Here is a demo on YouTube.
https://www.youtube.com/watch?v=AMSUG4V3cvU
 
I doubt you will see another one in the UK.
 
£125