Late Junction is great, really hope they don’t scrap it but looks unlikely they’ll u-turn. There’s lots of good stuff on R3 more generally, especially at the weekends or after 8-9pm most evenings. They broadcast every Prom live during the summer, which is a nice soundtrack to stick on when cooking.
Drama stuff can be a bit hit and miss, although they did a great set of short Beckett plays a few years ago with Ian McKellen.