This has been on my list of things to blog for some weeks... At last, here it is!
http://www.bsacsurv.org/index.jsp is the home of the British Society for Antimicrobial Chemotherapy survey of antimicrobial resistance. Two surveys are being run, one covering lower respiratory infection and the other bacteraemia. Results are presented here for the use of microbiologists and medical professionals, and you can find data for particular organisms and for particular antimicrobial agents. The methodology of the project is presented in articles in Journal of Antimicrobial Chemotherapy, which are referenced on the site itself (in the disclaimer). The site includes data on the resistance of MRSA to other antimicrobials.