London protests LIVE: Police out in force as major pro-Palestine march to Whitehall underway

Photographs show thousands of protesters making their way towards Whitehall.

Thousands of protesters are reportedly taking part in the march (Photo by JUSTIN TALLIS / AFP via Getty Images)

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A Palestinian flag flutters in the breeze beside the Palace of Westminster as a National March in support of Palestine, organised by Palestine Solidarity Campaign, passes by (Photo by JUSTIN TALLIS / AFP via Getty Images)

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People cross Westminster Bridge as they take part in a National March in support of Palestine, organised by Palestine Solidarity Campaign (Photo by JUSTIN TALLIS / AFP via Getty Images)

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