Any tax advisers on here know anything about how reciprocal tax agreements work? I’m having a lot of trouble finding an advisor/accountant in my area who knows enough to be any kind of help.

With which country? I have used specific accounts but that’s no use to you if it’s not US

It’s Israel.

I lived in CH on the basis if these for two 4 year periods. But unfortunately it was all done via PWC or E&Y.
And I am now aware that my old employers got all the benefits …

Are there any good Anglo- Israeli tax accountants around?

Not found one yet.

And I am now aware that my old employers got all the benefits …

Don’t think that’s uncommon. Where I work they normalize everything to UK PAYE levels and the winners offset the loosers. The exception are tax free countries which are usually tax free because otherwise no one would go there.

Might be worth asking on Contractor UK.