Councils should identify places where mass immigration may unsettle the local community, a report has said.
Britain faces "challenges" over increasing diversity
The Commission on Integration and Cohesion also suggests ways of handling potential problems to the government.
These include cultural briefing packs - giving tips on acceptable behaviour - and specialist integration teams to support areas experiencing strain.
The report also warns that "diversity can have a negative impact, but only in particular circumstances".
It also recommends ending funding for single-issue groups that cannot show they benefit the wider community.
'Cause for alarm'
The proposed packs are based on work by some councils to explain basic facts about British ways of life to newly-arrived migrants.
"The packs might say that we like to queue at the Post Office and the bus stop and we don't really like spitting in the street," said a spokesman.
The commission found that areas which have never before experienced mass migration are on a frontline of change, such as rural areas which have seen the arrival of immigrant farm workers.
Despite these warnings, commission chair Darra Singh said that, while tensions do exist, the UK remains predominantly united.
Research conducted by the commission found three-quarters of those questioned said they preferred to live in ethnically-mixed neighbourhoods.
The commission also recommends:
- Specialist integration teams from government to support areas experiencing strain
- Cutting public body translation budgets to reinvest in English classes
- Forcing big businesses which benefit from foreign workers to pay towards English lessons
- "Contracts" between local areas and newly arriving immigrants setting out what is expected of them
Mr Singh said: "We have to recognise that there are communities who are experiencing migration in a way they haven't before and that can be unsettling.
"Whilst there is no cause for alarm, there is a clear case for action."
Mr Singh called for special work at local level to predict how areas are changing so councils can develop tailored policies to help people get on.
Ministers will respond in full to the report in the autumn, but Communities Secretary Ruth Kelly said it "raises some important questions for central government".
She said: "It is only by facing these issues head-on, that we can continue to benefit from migration and diversity, while maintaining the common bonds that tie us all together."
Professor Ted Cantle, who led the government inquiry into the riots in Bradford, Oldham and Burnley in 2001, said that there has been a big increase in the number of migrants.
He added: "Some of these have given rise to tensions - but for the most part, of course, they have boosted the economy, they have contributed in ways that have been probably quite helpful to local firms and industry and not necessarily contributed to tension."