I find it depressing how few people take about how classist parliament is. 33% of MPs went to fee-paying schools, compared to 7% of the general population. 25% of all MPs previously held a job in politics, compared to a negligible fraction of the general population. 23% of MPs went to Oxbridge, compared to a negligible fraction of the general population. 15% of MPs have a background in finance, compared to 3% of the general population. 3% have a background in manual labour, compared to 18% of the general population (driver is counted in manual labour, if that seems higher than you expected).
Women are about half as well represented as they should be. The working classes are something like a sixth as well represented as they should be. But you very rarely hear about the latter (I mean, not to disparage the former, just as a point of comparison).