I laso think thta immigrants should have had an great influence in food, customes and ways of seeing the society. I feel that after inmigrants arrived to Britain, the social scales and the economical system was managed in a different way.
Of course, inmigrants and native had to face fights and differents opinions. However, in order to not make their lives terrible, they had to learn how to deal with that problems, trying to get to the best agreements for both of them.
Until these days, to arrive to a foreign country results too difficult because not all native will receive inmigrants in a polite and optimistic way, specially when there are people who belive that immigrants come to their country to take heir works and earn their money.
As a very close example, we can see how some Chilean think in that way about Peruvians.