"Your country is well-known for its firm commitment to equality of opportunity for all members of society.
Yet, as you have rightly pointed out, the effect of some of the legislation designed to achieve this goal has been to impose unjust limitations on the freedom of religious communities to act in accordance with their beliefs."
Only one small problem - Directive 2002/73/EC. The UK has already been warned that its current bill doesn't go far enough and unless it toughens it up, the EU Commission will refer us to the European Court of Justice.
It's not the UK the Pope should be criticising, but the EU.
Update: I just spotted this quote from a Mr Hughes:
...the pontiff should ensure existing EU legislation was applied in the Vatican, rather than attacking equality in the UK.The Pope doesn't have to ensure the application of EU legislation because the Vatican is not a member of the EU.