HK international schools salaries

I have been applying for international school roles in HK and the topic about salary seems wide and ambiguous (e.g unsure if salaries are including or not including housing allowance, benefits, gratuity). I haven’t been able to find any pay scales online so don’t really have a ballpark on an idea of ranges.

So my question is if coming from the UK, with a couple years of teaching experience with a teaching qualification and masters, what is the approximate base expected pay range(without added bonuses)? I am aiming for schools similar to Kellett, Shrewsbury, SISHK etc. And if offered lower than expected, is it negotiable (as it’s often based on pay scale). Thanks in advance!