This is the first Queen’s Speech by a minority government for 40 years.
Theresa May had hoped to have secured a deal with the Democratic Unionist Party in advance of the occasion after she failed to win a majority at the ballot box.
But talks to thrash out a confidence and supply arrangement have not yet concluded.
If an agreement is not reached by the time of the vote on the government’s legislative agenda next week, opposition parties could unite against it in the Commons.
That in turn could lead to Jeremy Corbyn having the chance to form an alternative government or ultimately another election.
Traditionally, the Queen arrives by horse drawn carriage, but today travelled to the Palace of Westminster by car and wearing “day dress”.
The calling of a snap election meant there was not adequate time to prepare for the pomp and ceremony of the usual event.
In addition, Trooping the Colour last weekend to mark the Queen’s official birthday limited rehearsal time.
After delivering the speech, which this time sets out the government’s agenda for the next two years rather than just one, the monarch is expected to attend Royal Ascot.
Her diary had to be changed after the State Opening of Parliament was put back two days following June 8’s inconclusive result.
Protests in a so-called “day of rage” are expected as the event unfolds in Westminster.