Metro Imaging or Bayeaux or likely anywhere that runs an E6 dip/dunk line in London will have the necessary hangers. Some others elsewhere in the country, though couldn't tell you the full list.
I found that some labs offering E6 sheet film processing restrict that to 4x5 or 5x7. If they use hanger processors (most likely) that is hard to explain, if they use drums it still is not easy to explain.
I found that some labs offering E6 sheet film processing restrict that to 4x5 or 5x7. If they use hanger processors (most likely) that is hard to explain, if they use drums it still is not easy to explain.
Peak do that with BW dip/dunk - max size 4x5 - there's probably a long list of reasons why places don't want to use the hangers in different machines - most likely to do with working practices & possibly different mechanisms that make it harder to swap them efficiently - drum processing is the most inexplicable, especially given that Jobo make suitable Expert drums.
They're only part of the EU until Brexit goes through, but the people at Bayeaux (http://www.bayeux.co.uk/) were absolutely lovely while I was visiting. They did a fine job with my 8x10s.