(CNN) Flights from Sharm el-Sheikh Airport to the United Kingdom will resume Friday with new security measures in place, the British prime minister's office said late Thursday.

An Egyptian soldier prays as emergency workers prepare to unload bodies of victims at a military airport north of Suez, Egypt, on October 31.

An Egyptian soldier prays as emergency workers prepare to unload bodies of victims at a military airport north of Suez, Egypt, on October 31.

Journalists and spectators wait for ambulances to arrive at the Zeinhom morgue in Cairo on October 31.

Journalists and spectators wait for ambulances to arrive at the Zeinhom morgue in Cairo on October 31.

Employees with the Russian Ministry for Emergency Situations wait in Moscow for their flight to Egypt on October 31.

Employees with the Russian Ministry for Emergency Situations wait in Moscow for their flight to Egypt on October 31.

People light candles and leave flowers at the Russian Embassy in Kiev, Ukraine, on October 31.

People light candles and leave flowers at the Russian Embassy in Kiev, Ukraine, on October 31.

Villagers watch an ambulance as it drives to unload bodies on October 31.

Villagers watch an ambulance as it drives to unload bodies on October 31.

The tail of the jet sits in a field on October 31.

The tail of the jet sits in a field on October 31.

An item of clothing lies at the site where the plane crashed on October 31.

An item of clothing lies at the site where the plane crashed on October 31.

Ismail, center, and other officials visit the site of the plane crash on October 31.

Ismail, center, and other officials visit the site of the plane crash on October 31.

Egyptian Prime Minister Sherif Ismail, third from right, visits the site of the plane crash with military and government officials on October 31.

Egyptian Prime Minister Sherif Ismail, third from right, visits the site of the plane crash with military and government officials on October 31.

Egyptian paramedics load the bodies of victims into a military plane at a military air base by the Suez Canal on Saturday, October 31.

Egyptian paramedics load the bodies of victims into a military plane at a military air base by the Suez Canal on Saturday, October 31.

People place flowers and messages in front of the Russian Embassy in Cairo on November 1.

People place flowers and messages in front of the Russian Embassy in Cairo on November 1.

Candles, toys, flowers and portraits are left at Pulkovo International Airport outside St. Petersburg on November 1.

Candles, toys, flowers and portraits are left at Pulkovo International Airport outside St. Petersburg on November 1.

Debris from the airliner is seen on November 1.

Debris from the airliner is seen on November 1.

More debris is shown on November 1. The crash site is in a remote area of a region plagued by a violent Islamic insurgency.

More debris is shown on November 1. The crash site is in a remote area of a region plagued by a violent Islamic insurgency.

Debris belonging to the Russian airliner is shown at the site of the crash on November 1.

Debris belonging to the Russian airliner is shown at the site of the crash on November 1.

Egyptian army soldiers guard the luggage and other belongings of passengers piled up at the site of the crash on November 1.

Egyptian army soldiers guard the luggage and other belongings of passengers piled up at the site of the crash on November 1.

A piece of the engine sits on the ground at the crash site on November 1.

A piece of the engine sits on the ground at the crash site on November 1.

Egyptian military personnel stand near the tail of the jet in Hassana on Sunday, November 1.

Egyptian military personnel stand near the tail of the jet in Hassana on Sunday, November 1.

Russian emergency personnel collect personal belongings of victims at the crash site in Hassana, Egypt, on November 2.

Russian emergency personnel collect personal belongings of victims at the crash site in Hassana, Egypt, on November 2.

The wreckage of Flight 9268 is seen in this image provided on Tuesday, November 3.

The wreckage of Flight 9268 is seen in this image provided on Tuesday, November 3.

The militant group ISIS published this image of what it claims is the bomb that brought down Metrojet Flight 9268 on Saturday, October 31. The photograph shows a soft-drink can and two components that appear to be a detonator and a switch. Flight 9268 crashed in Egypt's Sinai Peninsula en route to the Russian city of St. Petersburg. All 224 people on board were killed.

Passengers will only be allowed to carry hand baggage onto the plane, with other luggage transported separately, the prime minister's office said in a statement. The statement didn't explain how passengers would be reunited with their luggage.

"Outbound flights from the UK to Sharm el-Sheikh remain suspended and the Foreign Office continues to advise against all but essential travel by air to or from Sharm el-Sheikh airport but we are continuing to work with the Egyptians to get back to normal service as soon as possible," the statement said.

British and Irish officials had announced Wednesday that flights from Sharm el-Sheikh to their countries would be suspended because of concerns about security.

As authorities investigate the crash of a Russian airliner in Egypt's Sinai Peninsula, the airport where Metrojet Flight 9268 originated is facing new scrutiny.

U.S. intelligence assessments suggest someone planted a bomb on the plane before takeoff, multiple U.S. officials said Wednesday, and that someone inside Sharm el-Sheikh airport could have helped.

However, Egyptian Civil Aviation Minister Hossam Kamel said it's too early to make that suggestion.

"Regarding the hypothesis of having brought down the plane through an internal explosion, the investigation committee has not found any evidence or data that would confirm this hypothesis," he said.

The small airport in the popular Red Sea resort sees about 160 flights daily, and while there's a visible security presence, some who have traveled through there have said security appears lax.

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Egyptian Foreign Minister Sameh Shoukry told CNN's Christiane Amanpour that Egypt is providing sufficient security in the wake of the Russian airliner crash.

"We are cognizant of the interest and the concern and have provided additional security arrangements in all of our airports for the protection of our tourists and also to indicate that we are not failing any efforts."

Six members of the British military are in Sharm el-Sheikh and are working with British government colleagues to assess security arrangements in place on the ground, a British ministry of defense spokesperson told CNN Thursday.

Egyptian officials said they'd earlier tightened security at all Egyptian airports in response to British concerns.

"Ten months ago, our British friends asked us to check the security measures at Sharm El-Sheikh airport. This is very normal," Egyptian President Abdel Fattah el-Sisi said Thursday in a news conference with UK Prime Minister David Cameron in London.

Kamel said Egyptian authorities are cooperating with the American FAA and the British by implementing further security measures.

"All Egyptian airports apply international security and safety standards. They are subject to routine checks from by the Egyptian Civil Aviation Authority and international monitoring authorities," he said.

Photos: 10 plane crashes that changed aviation Photos: 10 plane crashes that changed aviation Turkish Airlines Flight 981 – A cargo door blew off Turkish Airlines Flight 981 outside Paris in 1974 while the plane was in the air, causing cabin pressure to drop and eventually leading to a section of the cabin floor to collapse. The accident ultimately led to an industry-wide change in design limiting the possibility of depressurization. Hide Caption 1 of 10 Photos: 10 plane crashes that changed aviation Grand Canyon mid-air collision – In 1956, a TWA jet crashed into a United Airlines flight above the Grand Canyon. The incident highlighted the need for better communication between planes. A few years later, the Federal Aviation Administration (FAA) was formed to set guidelines for aviation in the United States. Hide Caption 2 of 10 Photos: 10 plane crashes that changed aviation Tenerife Airport Disaster – In 1977, two planes collided on the runway at Los Rodeos Airport (now Tenerife Norte Airport). Like the incident over the Grand Canyon, the crash illustrated the need for better communication between pilots and air traffic control. Soon after, there was a push to standardize air traffic control phraseology. Hide Caption 3 of 10 Photos: 10 plane crashes that changed aviation Air Canada Flight 797 – A fire started behind the bathrooms of Air Canada Flight 797 while it was flying over Kentucky in 1983. Though the pilot was able to make an emergency landing, only half the passengers escaped in time. Afterward the FAA required all aircraft bathrooms to be equipped with smoke detectors and fire extinguishers. Hide Caption 4 of 10 Photos: 10 plane crashes that changed aviation British Airtours Flight 28M – In 1985, a British Airtours 737 caught fire before take-off at Manchester International Airport. Though the pilot followed protocol, the seats were placed too close to each other, making it impossible for some passengers to escape. After the incident, plane manufacturers changed the internal layout to make evacuation easier. Hide Caption 5 of 10 Photos: 10 plane crashes that changed aviation Japan Airlines Flight 123 – A Japan Airlines Boeing 747 crashed in the mountains outside of Tokyo in 1985 as the result of a poorly executed repair. After the accident, repairs to older aircraft were monitored much more closely. Hide Caption 6 of 10 Photos: 10 plane crashes that changed aviation Aloha Airlines Flight 243 – In 1988, while flying at 24,000 feet, a large section of the roof blew off of Aloha Airlines Flight 243 while en route to Honolulu. The plane -- a Boeing 737 -- was 19 years old, and investigators blamed the incident on age-related wear and tear. The FAA created the National Aging Aircraft Research Program, which monitors the structural integrity of older planes. Hide Caption 7 of 10 Photos: 10 plane crashes that changed aviation TWA Flight 800 – A reconstruction of a section of fuselage from TWA Flight 800 sits in the National Transportation Safety Board Academy as a teaching tool for air crash investigators. In the aftermath of the 1996 incident, in which the Boeing 747 crashed into the ocean near New York, federal officials issued a new safety requirement mandating certain planes to install a device that would prevent fuel tanks from exploding. Hide Caption 8 of 10 Photos: 10 plane crashes that changed aviation American Airlines Flight 587 – After the American Airlines Flight 587 crash in 2001, the NTSB ruled the first officer was excessive in his use of rudder inputs, which ultimately led to the tail fin snapping off. Since the accident, American Airlines has updated their pilot training program and the FAA has implemented new training regulations for pilots. Hide Caption 9 of 10 Photos: 10 plane crashes that changed aviation Air France Flight 447 – Both the Air France 447 crash in 2009, which took nearly two years to recover, and the more recent incident involving Malaysia Airlines Flight 370 have spotlighted the need for better access to data for investigation purposes. On the heels of AF447, the European Aviation Safety Agency have recommended plane manufacturers retire "obsolete recording technologies." Hide Caption 10 of 10

Lax security?

If an explosive device brought down the plane, the United States does not believe it was designed to get past airport security procedures -- either passenger screening or other security measures --- in Egypt, a U.S. official said.

Rather, it is believed whoever was behind it used a conventional bomb and took advantage of lax security or had someone complicit at the airport, the official said.

A British national security official said the British government is concerned about the airport because its experts have observed that security procedures are "poorly supervised" and "lack consistency."

The airport has a reputation for being understaffed at security checkpoints, CNN safety analyst David Soucie said, and a website with passenger comments about their airport experience had complaints about security employees who stole items or acted rudely.

But Soucie also noted that the airport has stricter-than-average security checks for passengers, including putting all baggage through a barometric pressure device that would activate a bomb with altitude-sensitive detonators.

If a bombing were an inside job, however, it wouldn't have been stopped by security measures the average airline passenger goes through, he said.

Security lapse in May

Like most airports in the world, Sharm el-Sheikh Airport doesn't do a very good job of controlling access outside the terminals, Soucie said.

In May, a mentally disturbed man slipped through a hole in a wall and tampered with a plane, the Cairo Post reported, citing Egyptian newspaper Youm7.

The man approached a plane sitting on the runway and tried to open a door to the aircraft, the article said. He was arrested after moving a block in front of the plane's wheel, the article said.

Operating in a tense region

Some airlines already avoid flying over the Sinai region, where ISIS-affiliated militants have been battling Egyptian security forces for the past few years.

Air France, KLM, Lufthansa, Emirates, Qatar Airways, Air Arabia, Etihad and flydubai have recently opted to reroute their flights to circumvent the area.

The European Aviation Safety Agency issued guidance for the region a year ago, when it warned civilian aircraft operators about a "significant risk" because of "ongoing insurgent activity" in North Sinai, and told airlines to not fly below 26,000 feet.

The Federal Aviation Administration, which controls U.S. airlines, issued similar guidance in March.