The appointments for finals day are never really a surprise with the same officials seeming to be there each year. I would expect to see 4 from Bailey, Robinson, Wharf, Saggers, Millns, Cook or Burns.
Interestingly, Michael Gough's place on the International Panel is still to be filled. I reckon Saggers is being primed for the spot, although I do feel there are far more suitable candidates than him!