Personal Pension can be transfered to a PRSA without incurring any charges and then the PRSA can be transfered to Exc Pension however be very careful about charges when transfering to Exc Pension especially where Acorn are concerned! There should be no problem then transfering the pension fund to an Austrailian pension fund should the need occur.
Regarding Dave's post above you may be able to surrender the Exc Pension if your husband is over 50. Good luck with the move.