The only reason this is coming about is because of an Equality Impact Assessment, which has deemed the *change*, not the *policy itself* as problematic.
Okay, fine, the change, then. I'm not too fussed about that distinction as I can't see that anything turns on it. If somebody wins a challenge against the change then the new refund rules would have to be revised again.
It is possible to distinguish between
(a) the policy as amended and
(b) the policy as amended but with vague (at least as far as the public is concerned) mitigations and exceptions applied if people argue. I'm saying (b) might be a bit safer from successful challenge than (a), but it still looks discriminatory to me (or the change from the old refund rules to (b) still looks discriminatory to me, if you prefer).
If this is a
proportionate means of achieving a legitimate aim then I am a pimple on the bottom of the Marquis of Queensbury's aunt.