Rules around withdrawing money from S&S ISA as a non-resident

I moved to Australia last year almost exactly, originally only planning on having an extended holiday but life moves. Now I need to take the money out of my S&S ISA due to my provider's terms and conditions, and I'm wondering what the tax implications are here? There's not a HUGE amount of money in there but I believe it's over the capital gains allowance. Any decent financial advisors that can be recommended?