It's not a surprise, as LBS and Insead are the best two business schools in EU, also top 10 globally. I visited Insead once during X'mas and found that among 570+ students, 90+ joined mckinsey and 70+ joined BCG. As far as I know, some most highly paid firm (not industrial companies) prefer LBS and Insead in EU. There are more opportunities for consulting in Insead and more finance opportunities in LBS.