I've not read the whole thread, but some of the early comments; so I apoligise if this question has been answered.
RYR claim pilots are not employees; they are self-employed. Any complaints should be made to BRK. So now there are 2 supposed buffers between the pilot and RYR; one is the pilot's LTD company and the 2nd is BRK who contract that LTD company to provide a pilot who is then shuffled onto RYR. So how can RYR then claim to be able to dismiss you for gross misconduct if you make a 'freedom of speech' allegation? They could terminate the contract with BRK for your services, but to suggest that they can dismiss you directly seems to be outside the industrial relationship which is in place. Please correct me if wrong.