It's definitely a balance, obviously in the BBC's interest to accomodate Strictly. But then actors want to get the big money for panto.
But EE is a full time job, on more money than an average person, they aren't obliged to let somebody have time off to do Panto, of their contract doesn't allow for it or whatever. I don't know exactly how long Panto takes for an actor with rehearsals etc. Let's say two months, does the actor give up two months wages because they aren't doing their job in that time? If they don't lose their wages for the time they aren't working on EE, the BBC has every right to refuse to allow it.
Steve McFadden has been there long enough that he would've had the power in negotiations to say, he wants a panto break in his schedule.
Brian Conley, only been there five minutes probably didn't have that in his contract.