Radio times website is always down

I’ll often check out the radio times website to see what is currently on TV if I get some spare time. I’ve noticed that 1/5 times I go to the site, it is completely down and it is often very slow to load.

I imagine the site could be quite busy but surely a site that popular (and with a decent budget I’d imagine) must be able to sort out some decent hosting for their website?!

I wonder how it is hosted.. possibly in-house?