Erosion of a tungsten marker coating and deposition on JET divertor tiles used during the experimental campaign 2007-2009 and on Inner Wall Guard Limiter (IWGL) tiles used 2004-2009 were determined. The tungsten coating of the divertor tiles was mostly intact with the largest erosion being about 30%. Local high erosion areas were observed on the load bearing divertor tile 5 and on divertor tile 8. The IWGL tiles showed a complicated distribution of erosion and deposition areas. The total amount of carbon deposited on the all IWGL tiles during the campaign 2004-2009 was estimated to be 65g.