With that in mind she's aiming to make the United Kingdom a global leader in tackling plastic waste, and will be encouraging the rest of the Commonwealth to follow suit in an event at Buckingham Palace.
The news was welcomed by the Green Party, but co-leader Jonathan Bartley said the government "must see these plans through to action, and bring forward the utterly un-ambitious target of eliminating all avoidable plastic waste by 2042".
Prime Minister Theresa May said her government will launch a consultation on banning the single-use items later this year, ahead of legislation on the issue.
A consultation this year will examine the proposals, and the government will consult with industry to find alternatives.
Trudeau, however, would not be pinned down on the question of whether Canada would follow May's lead on drinking straws. "Reducing the amount of plastic we're using and discarding is vital for curbing ocean plastic pollution and this could be the start of the elimination of unnecessary throwaway plastic".
Prime minister says sorry for treatment of Commonwealth immigrants
It is time for the inclusive prosperity for which we stand as Commonwealth people". The 492 passengers were temporarily housed near Brixton in London .
"Alongside our domestic action, this week we are rallying Commonwealth countries to join us in the fight against marine plastics, with £61.4m funding for global research and to improve waste management in developing countries".
However, if Trudeau was noncommittal on the question of drinking straws, he was anything but on another issue: Canada's support for LGBTQ rights at the Commonwealth.
The institution has suffered over the years from relatively low engagement by its founding member, Britain.
Trudeau also was expected to advocate for more LGBTQ rights around the globe, but on that front he faces resistance - particularly from some African countries, many of which still outlaw same-sex activities.
Despite that opposition, which saw LGBTQ rights kept off the official summit agenda, Trudeau met Thursday with Commonwealth gay-rights activists to reassure them of his continued support.
Queen Elizabeth Publicly Supports Prince Charles As The Next Commonwealth Leader
Given its highly diverse membership, if agreements can be reached within the Commonwealth, they can likely achieve wider support. This week Malcolm Turnbull again restated the Government's view that the "monarch of the United Kingdom" should hold the role.
Leaders from the Commonwealth - a network of 53 countries, mostly former British colonies - are meeting in London this week.
What has the Prime Minister said?
"So we need to use worldwide platforms with help from leaders like Prime Minister Trudeau".
The position of head of the Commonwealth is not hereditary and there is likely to be a discussion - and possibly a decision - tomorrow about whether Prince Charles should succeed her.
"That affection is reflected among the heads of government, who often send more junior representative to the meeting - this time around it is prime ministers and presidents".
It's unclear whether any other successors are being seriously considered.
Fortnite: Battle Royale Dev on Potential for New Maps
Once Fortnite Battle Royale Season 3 ends on April 30th, you will no longer be able to get these items, even if you keep playing. If they want to make changes to an area of the map, sure, they can just do it in a patch and that's that.