I think it says something about our current political system though that across all parties the leadership doesn't often reflect the UK. There are very few true working-class politicians in positions of power. Those who have actually lead working-class lives. I think the past this was different, or at least more representative than today, where most frontbenchers have journalism, legal or financial backgrounds - or even just career politicians. I appreciate you don't have to have worked in the NHS to be a government minister for health, but I imagine someone who had might have more to give in terms of insight and understanding the job/difficulties in front of them.
10 years ago career politicians used to come up in debates occasionally, now people seem to have begrudgingly accepted it. All research points to having a diverse set of views and opinions to inform good decision-making. Our current political system means that only certain people can feasibly run as MPs, and I do think it reduces the effectiveness of our government overall.