Planes are banned from flying below a certain altitude over parts of London, Edinburgh and Balmoral Castle in Aberdeenshire.
Kites, small balloons and parachutes have also been included in the low-flying ban, which will last until the end of today in Scotland and until after the Queen's funeral down south. The ban has been implemented by the The Civil Aviation Authority (CAA), who say that it is part of wider security arrangements.
They say that a "protective blanket" will be created over the restricted areas while the ban is in place, reports the Mirror. In Scotland, aircrafts are not permitted to fly below 6,000 feet above mean sea between Balmoral Castle in Aberdeenshire and the Palace of Holyrood in Edinburgh until 11.59pm on Wednesday.
Aircrafts will be banned from flying below 2,500 feet above mean sea level within central London until 7am on September 19, with potential for this time limit to be extended.
Will the ban impact travel?
The CAA says that the ban will not affect commercial flights because they operate above the altitude limits. The ban is more likely to impact smaller personal jets.
According to the CAA website the 'cabin altitude' in commercial aircraft is typically between 5,000 and 7,500 feet, meaning travel is unlikely to be affected by the 6,000 feet ban in parts of Scotland.
However, Scots who are planning to travel down to London to see the historic funeral have been warned by the Foreign, Commonwealth and Development Office that airports are set to be extremely busy.
They have warned that: "unforeseen events may require commercial and private flights to divert from the intended airport of arrival."
London is expected to be hit with unprecedented travel disruption in the days leading up to the Queen's funeral on Monday. Yesterday the official spokesman for Prime Minister Liz Truss acknowledged that commuters may want to adjust their work patterns accordingly.
"At this point we can't be more specific on numbers. We do expect it to be extremely busy," he told Mail Online. "I think for the Queen Mother it was around 200,000 people (who attended), we expect (it) to be far more than that for this lying in state."
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