RS's Schedule of Accreditation is here. It would be a lot easier if RS made it clearly available, rather than having to hunt it down via UKAS.
Thank you for this, reading the two it seems that Calmet offer the best calibration of the two, but anyone reading RS's capabilities (claimed) would feel comforted to know that they can achieve high standards in theory.
Sadly though my experience does not reflect this capability and the person who I spoke to said that both he and another colleague had downloaded the 3478A manual and neither of them could get it to accept a calibration and retain it. Its no good having all the big flash and expensive calibration equipment if the staff don't know how to use it and or read manuals because clearly something prevented them from achieving what I've achieved at home.
Also claimed that it was reading around 3v low across all voltage ranges, something that is not now doing as it concurs with my 21 other meters, 2 Fluke 27, 10 Fluke 25, 2 HP 3466A, 1 Philips PM2521, 1 Solarton 7045, 1 Keithley 160 and 4 other less known DMM's so on that basis I'm lost for words.
I have my theory's on this but perhaps its best not airing them on a public forum.