I haven't been following this thread completely but I'd imagine that reducing your salary to below £100k would be difficult if you are on PAYE and earning a sizeable amount more i.e. £120k? The only way I can think of reducing your salary is by increasing your pension contribution and taking salary sacrifice schemes if they are available?I do a SA but that's to claim my pension relief but also to help me prove that my total earnings fall below 100k so that I could get my 30hrs of childcare.
Not that I need to anymore with both of them at school. However it's worth reducing your salary over 100k to avoid the 60% trap.