Royal assent is a ceremonial process at this point as the powers to refuse a bill are very, very rarely exercised.
From Wikipedia (https://en.wikipedia.org/wiki/Royal_assent):
"The last bill that was refused assent was the Scottish Militia Bill during Queen Anne's reign in 1708."
Even that was only done on the advice of government ministers who had second thoughts after the bill was passed.
Royal assent is a ceremonial process at this point as the powers to refuse a bill are very, very rarely exercised.