If the job site was a for-profit, it would probably be put out of business by competitors! But, since the government can jail people for not handing over their resources, products aren't held accountable by the Market (big 'M').
I wouldn't even mind if it had an API[2], so I could make a more useful tool[3]. But instead I have to manually go through a ton of jobs each day so I can get unemployment handouts from daddy government (if there was no such thing as VAT, I probably wouldn't need these! Anyway).
Gov.uk looks a bit nice with its san serif typeface[4] and minimalist design; but it's varnish on a clunky turd.
---
[1] https://www.gov.uk/jobsearch
[2] I couldn't find one yesterday. I'm going to have another look.
[3] Currently learning Python and looking for a little side project.
[4] Looking at the CSS, the particular font is 'nta'—and is presumably custom.