I would normally agree nameshifter but I have also looked at the salaries paid to the Heads of the Grammar schools in Torquay. One is 20% higher and the other is, wait for it, over 50% higher. Does that answer your question? The Deputies are paid very high salaries too, as you might expect. It appears these schools have re-evaluated the salaries of their Headteachers and shifted them upwards, as they are permitted to do as Academies. The fact that Colyton says, in its Recruitment pack, that it has yet to do this after 4 years of being an academy clearly puts it out of kilter with two very similar schools in Devon. I suspect if you looked at the 54 "similar" academic schools that the D of E uses as a benchmark for the school, I have a suspicion that £90k will be on the low side for the published Head's salary. The salaries I have quoted are for 2012/13 as well, not 2015/16!
I think that a spouse in London might be an issue, but they have failed to appoint 3 times. I undeerstand that is what a poster said earlier and that, of course, might be wrong. That cannot be the issue 3 times over, can it?
Also, NHS staff (managers and senior clinicians), senior County Council and District Council staff will paid salaires of the type I mention, even in Devon. You can check that too of course. Schools, these days, benchmark their salaries against similar schools (as listed in the D of E data), local schools, and local "similar" jobs. Salary could be an underlying problem if no Deputy Head wants the job for the few £ more, and local Heads are already paid above the salary quoted, (although the Torquay ones are not likely candidates) and if you cannot attract from another area, then who are the candidates for this job? My DDs prep school paid £75,000 p/a 10 years ago.
Colyton, quite rightly, is seeking excellence from the new Head. If the job is as demanding as Molio asserted earlier, then £90k is not particularly attractive. The recruitment details are also effectively saying that the new excellent candidate has to go in and negotiate a higher salary package which will only be agreed if the appointment panel think the candidate deserves it. Normally the "value" of such a Head is evaluated and determined beforehand (and they have had 4 years) and salary is progressed via performance management - not negotiation on appointment. Looks a bit of a turn off to me.
What do you think the underlying reasons are, nameshifter?