The Queen’s coffin will travel on A-roads rather than motorways as she makes her final journey after her state funeral on Monday.
The hearse carrying the late monarch is expected to travel from Westminster Abbey to St George's Chapel in Windsor via the A30 and A4 rather than the M4, giving more mourners the chance to pay their last respects.
While the motorway would provide the quickest option, officials are keen to give the public the chance to say goodbye to the country's longest-serving monarch after the queue to see her lie in state reached five miles.
The full route for the Queen's final journey could be published on Friday to allow people time to make plans for where to give their send-off.
The Daily Mail reported an insider as saying: “All the other royals will be going on the M4.”
Thousands are likely to line the route through west London and Berkshire, with up to 350,000 people set to be left disappointed at Westminster Hall as wait times remain high to see the Queen lie in state.
Former Conservative cabinet minister David Jones had called for an extension to the post-funeral route and told the Daily Mail: “I think it’s very important that as many people as possible have the opportunity to pay their last respects while in sight of the coffin. So it’s sensible that it’s not going all the way along the motorway, as people would not be able to do that there.
“It’s very difficult as there are so many people who want to pay their last respects, so to maximise the amount of people who can is a good thing.”
The Queen's funeral at Westminster Abbey is expected to finish at around midday on Monday.
The Queen's children and other royals will then walk behind her coffin to Wellington Arch, with the hearse set to arrive in Windsor at 3.15pm before Elizabeth II is buried next to her husband the Duke of Edinburgh in a private ceremony.
Around 400,000 people are expected to file past the Queen's coffin while it lies in state until Monday's funeral, but the queue could be closed on Saturday night if those at the back will not have enough time to make it into Westminster Hall.
