It's all just policy information on there. It's not online banking. It'd be nice if all sites were available on HTTPS, but it's not unusual or funny.
When I see bank + policy + not just some random bank but the BANK OF ENGLAND, I do expect to see HTTPS guaranteeing the integrity of what is unquestionably important and influential data being served to decision makers.
This amused me, but maybe I'm just easily amused.