The new policy allows men into women's changing areas using a 'comfortable' criterion, rather than a criterion laid down in the Equality Act 2010. There's a reason mixed sex hospital wards were phased out by the NHS.

For a company that has reported showing a 17% decline in pre-tax profits and is already closing 120 full-line stores- I doubt they would be hiring extra staff just to provide this protection for it's customers or staff, which tend to be mainly students or older women. Staff might be told by management to confront people- but I doubt anyone would have the courage to confront a largely built male. Men do not belong in women's changing areas full stop.