Thousands of people have gathered for a pro-Palestinian demonstration in London, amid international concern over the situation in Israel and Gaza.Police warned ahead of the march that anyone showing support for militant group Hamas could face arrest.Hamas was proscribed by the UK in March 2001, and supporting the organisation can carry with it a maximum of 14 years in prison and/or a fine.It comes as Palestinians began a mass exodus from northern Gaza after Israel's military told them to evacuat

Thousands of people have gathered for a pro-Palestinian demonstration in London, amid international concern over the situation in Israel and Gaza.Police warned ahead of the march that anyone showing support for militant group Hamas could face arrest.Hamas was proscribed by the UK in March 2001, and supporting the organisation can carry with it a maximum of 14 years in prison and/or a fine.It comes as Palestinians began a mass exodus from northern Gaza after Israel's military told them to evacuate ahead of an expected ground invasion.