Britannic Callsign and Signals

[A. Gabriel]

It seems exceedingly hard to locate sources for these two particulars when it comes to Britannic. For the other two we have:

Olympic: signal letters HSRP, callsign MKC
Titanic: signal letters HVMP, callsign MGY

Does anyone know what Britannic’s callsign and signal letters were?

 

[Mark Chirnside]

Britannic's signal letters were JMDK. I don't have her callsign handy but I thought I had it somewhere!

Best wishes

Mark.