One Direction's Zayn Malik received death threats after pledging his support to the #FreePalestine campaign.
Around 30,000 protesters have taken to the streets in Kensington to show their support for the Palestinians.
The controversial QPR player got into a Twitter scrap with Israel international Yossi Benayoun, who took exception to his tweets about Gaza.
ITV News correspondent Rohit Kachroo is in Tel Aviv, Israel:
Sirens in Tel Aviv
ITV News correspondent Dan Rivers is in Gaza:
Aerial bombardment is getting quite intense. Trying to sleep but very difficult. Hop
A video feed from Gaza showed the sky and buildings in the city lit up by flares and missiles.
Very intense bombardment. Getting a bit anxious that one of these bangs will blow windows out of my room #Gaza
Israel said five of its soldiers were killed today, with four of them in a mortar attack.
The country's prime minister Benjamin Netanyahu said Israel needed to prepare for a "protracted campaign" in Gaza.
The Israel Defence Forces tonight told Palestinians living in the neighbourhoods of Zeitoun, Shujaiyya, Jabiliya, Beit Lahiya and Beit Hanoun to evacuate immediately to Gaza City.
ITV News Correspondent Rohit Kachroo reports from Israel:
ITV News Correspondent Dan Rivers has tweeted from the Gaza Strip:
The media are being told not to go out on the streets at night because it is too dangerous, therefore you have to wonder if it's going to be safe for the residents to do so as well.
You also have to ask the question whether the residents have received the warning sent by text message to evacuate certain areas in the region and head to Gaza City.
There are many power outages across Gaza at the best of times, especially now this heavy bombardment has resumed in the last few hours.
Have they got the warning? If they have, where will they go? Will they come to an area like Gaza City, which itself has seen several strikes throughout the past days.
People here are facing the terrible choice of stay in the face of this Israeli bombardment or try and escape and take their chances out on the streets.
The Israeli army said five of its soldiers have been killed in two separate incidents today, including four in a mortar strike.
The Israel Defence Forces' Twitter feed said:
Staff Sgt. Moshe Davino, 20, from Jerusalem, was killed today in combat in the southern Gaza Strip. May his memory be blessed.
In addition, four IDF soldiers were killed along the Gaza border today as a result of mortar fire. Their families have been notified.
There were also local reports of casualties after Palestinian fighters launched a cross-border raid but there was no immediate confirmation of this.
Israeli Prime Minister Benjamin Netanyahu said his country must prepare for a protracted conflict in the Gaza Strip, ending any hopes of a quick end to fighting that has cost over 1,000 lives.
In a televised statement, he said that any solution to the crisis would require the demilitarisation of the Palestinian territory - which is controlled by Hamas.
Explosions at a refugee camp and hospital in Gaza, which left at least 10 people dead including eight children, has brought further devastation to the region.
Mortar strikes in Israel have left at least four people - understood to be soldiers - dead, according to Israeli reports.
Israeli Prime Minister Benjamin Netanyahu pledged tougher military action against Hamas after the attacks, as bloodshed in the Middle East conflict continues.
He also warned that Israel must be prepared for a protracted Gaza campaign.
Three separate rocket strikes in Gaza increased the death toll in the Middle East conflict with at least 10 dead after attacks on a refugee camp and hospital.
Hamas blamed Israel for the rocket strikes at the hospital Shifa and camp Shati, which left at least eight children dead. However, Israel claimed the attacks were down to misfiring Hamas rockets.
Eid celebrations in the region were cut short as despair and bloodshed returned in the Middle East.
ITV News Correspondent Dan Rivers reports from Gaza:
Warning: This video contains distressing images