We asked respondents to estimate the proportion of UK immigration in each of these categories [By giving them 100 points to split between 4 categories]

Asylum: estimate 37% (actual: 7%)
Family: estimate 17% (actual 6%)

Work: estimate 26% (actual 40%)
Study: estimate 19% (actual 38%)

Most of the other problems either predate the GFC or are shared with peer countries (almost all of which also saw some growth deceleration)

Poor responses to/deliberately walking straight into negative economic shocks