The only model I've ever come across of the Hermes was a small white metal model about 4-5 inches long by Skywave or Skytrex, I'm not sure who, it was produced with other models of RN Ships including a number of vessels - type 42's, 21's, 22's and HMS Plymouth, it depicts Hermes at the time of the Falklands and includes Sea Harriers. I built the model which is impressive for its size and put it on a sea base with a couple of escorts during the Falklands Campaign, someone must have this model unbuilt somewhere.