There must be a "drastic change" in Government strategy, a campaign group has said, after a report suggested the number of people who feel some political policies negatively affect Muslims is on the rise.

Almost 60% of those surveyed last year by the Islamic Human Rights Commission (IHRC) believed this, almost double the number who felt that way four years earlier.

A fifth of the practising Muslims asked said they "always" saw politicians indicate that Islam is problematic, and half said they believe politicians condone discriminatory acts against people of their faith.

Verbal and physical assaults against Muslims have increased in the four-year period, the report, entitled Environment of Hate: The New Normal for Muslims in the UK, said.

More than half of people said they had been treated with suspicion or wrongly accused of something.

Almost 90% of those who took part in the survey agreed that those who discriminate against Muslims are "highly driven by media content".

The IHRC, which surveyed 1,782 people across the UK, said the results of the report are "alarming".

The campaign group said: "A drastic change in Government strategy towards British Muslims is required and at the very least a structural understanding of racism has to be developed."

The "landmark" report provides a basis for new initiatives and interventions to tackle the issues and change attitudes, former Archbishop of Canterbury Dr Rowan Williams said.

"Opening up the political space through building alliances and creating cross-national, cross-class, trans-racial and multi-gendered coalitions for change on this vital issue is central here," he said.

Professor Ian Law from the University of Leeds said the report offers evidence that can be used to understand the rise of Islamophobia.

"This is a much-needed report which uncovers the silent domestic casualties of the war on terror; it carefully combines conceptual rigour and brute facts to lift the lid on the rise of Islamophobia in contemporary British society."

The full report is due to be launched on November 17.

A Home Office spokesman said the Prevent anti-radicalisation strategy is there to protect the vulnerable, and insisted the Government has done a lot to tackle anti-Muslim sentiment.

"Prevent is about protecting those who might be vulnerable to the poisonous and pernicious influence of radicalisation.

"This is a job for all of us and we are continuing to work in partnership with communities of all faith backgrounds to challenge those who spread hatred and intolerance.

"We must work with the overwhelming majority of Muslims who abhor the twisted narrative that has seduced some of our people. We must continue to celebrate Islam as a great world religion of peace.

"This Government is committed to combating all forms of hate crime and has done more than any other to counter anti-Muslim hatred. Last month the Prime Minister announced that police forces in England and Wales will be required to record anti-Muslim hate crimes as a specific category in the recorded crime statistics for the first time."