British lawmakers will hold a debate on whether it should downgrade President Donald Trump's visit to the United Kingdom after a petition opposing his trip gathered over 1.6 million signatures even as thousands marched in protest against the travel ban by America on seven Muslim countries.

The debate will be held in the House of Commons on February 20 and will also take in a second petition calling for the visit to go ahead, signed by more than 100,000 people.

Once a petition crosses 100,000 names, the Parliament's Petitions Committee is required to consider it for a debate in Parliament.

The petition titled 'Prevent Donald Trump from making State Visit to the United Kingdom' calls for the visit to be downgraded from a State Visit, which is hosted by Britain's Queen and includes a ceremonial welcome and a state banquet.

However, a rival petition titled 'Donald Trump should make a State Visit to the United Kingdom', has also gathered some attention since it was created in retaliation.

Downing Street has insisted the visit will go ahead. -- PTI