I've had a response as follows, I thought it would be of interest. It's time to thank Brexit voters as that's the only hope for this to be sorted out!
The IFoA believes it is acting in accordance with its obligations under the EU Directive on the Mutual Recognition of Professional Qualifications, which, as you will appreciate, it is obliged to do as a matter of EU law. It aims to comply at all times with all of its statutory and other obligations, including those contained in the Equality Act 2010.
Acceptance of the European MRA is a condition of membership of the AAE. It in any event is intended to reflect EU law, to which we are for the time being subject. As it happens, the current (2014) AAE MRA is currently subject to review. We will have regard to your comments in considering our input to that (AAE led) review, while recognising of course the legal obligations to which I have referred.
You ask about responsibility for MRAs in terms of IFoA governance. I can confirm that the decision to enter any MRA is a matter for our governing Council.