HZ 123, Hi
There are just three crew members; two pilots and the FE who is also a qualified LM (and was an LM on the Belfast for many years before he switched to FE).
They currently live in Oz and I believe they may have been granted citizenship.
Where they would get another crew is debateable as most of the other ex-Belfast crews are now retired or have other jobs. We used to say that it would take about 3-6 months to train a crew to safe standards; with the ground school taking up to 2-3 weeks as she is so old and complex to keep going. No sim so it's all hands on training...usually about 10 hours to achieve an IR/Base check.(they operate to SL regs which are the same as the CAA of 10-20 years ago).
Hope this helps!