http://news.bbc.co.uk/1/hi/uk/7822656.stmUK Jews demand Israeli ceasefire Feelings ran high at a pro-Palestinian rally in London and arrests were made
A number of prominent British Jews have written an open letter calling on the Israeli government to halt its military operations in Gaza immediately.
The letter, published in the Observer, warns the military action, far from improving security, will strengthen extremism and destabilise the region.
The signatories, who declare themselves "passionate supporters of Israel", include several rabbis.
The first major rally in support of Israel in the UK will take place later.
Prominent rabbis, academics and political figures supported the open letter, including Rabbi Dr Tony Bayfield, head of the Movement for Reform Judaism; Sir Jeremy Beecham, former chairman of the Labour party; Professor Shalom Lappin of the University of London and Baroness Julia Neuberger.
Pro-Israeli rally
They write: "We look upon the increasing loss of life on both sides of the Gaza conflict with horror.
"We have no doubt that rocket attacks into southern Israel, by Hamas and other militant Palestinian groups, are war crimes against Israel.
"No sovereign state should, or would, tolerate continued attacks and the deliberate targeting of civilians.
Israel has warned its may intensify its two-week-old offensive
"Israel had a right to respond and we support the Israeli government's decision to make stopping the rocket attacks an urgent priority.
"However, we believe that now only negotiations can secure long-term security for Israel and the region."
Earlier Jewish officials reacted angrily after a hoax e-mail claimed a rally planned to take place in London on Sunday had been cancelled.
The event at Trafalgar Square is expected to draw thousands of people - it will be the first major rally organised by the Jewish community in the UK over Israel's offensive against Palestinian militants in the Gaza Strip.
The e-mail purported to come from the UK's Jewish communal leadership, the Board of Deputies (BoD).
A rally is also being held in Manchester.
'8,000 rockets'
BoD chief executive John Benjamin said despite support for Israel's position, the events are primarily a call for peace.
He said: "Certainly I think the people who will be there will understand that Israel has felt it necessary to take action to stop the many thousands of rockets that have been launched from Gaza in the last several years.
"We're not just talking about the last two weeks but over the course of years I think there have been something like 8,000 rockets.
"So, there is an understanding of that position but it's not a rally that is either commending exactly what's going on on day by day, or even, as British Jews and British Christians and others who are coming together, making a statement about the military action - it's a call for peace."
Pro-Palestinian protesters have already been out in force
On Saturday thousands of pro-Palestinian demonstrators marched through London to call for an immediate ceasefire in Gaza.
The protest started peacefully but there were confrontations as police tried to move demonstrators away from the gates of the Israeli embassy.
Protests also took place in Edinburgh, Aberdeen, Belfast, Newcastle and Southampton.
In Gaza three Palestinians have been killed and dozens more injured by new Israeli tank fire and air strikes, according to medical sources.
Reports of the deaths came hours after Israel dropped leaflets warning Gazans to stay away from areas used by Hamas, saying its operation would escalate.
Some 820 Gazans and 13 Israelis have reportedly died in 14 days of fighting.
