Something with a Volt 8" such as the Wilmslow Audio Classique/HSM kits, the Kord Tornado or these:
https://pinkfishmedia.net/forum/threads/volt-bm-228-8-scanspeak-2905-990000-speaker-build.255319/
Other than that, on the cheaper end of the scale, the KEF Reference 103 are easy to find and pretty affordable. Sealed box so should work well in a smaller room, if a bit bigger then the KEF Reference 104/2 are superb, two 8" bass drivers but I found they need a bit of space around them to sound their best.
Other than that, plenty of cheaper Tannoy models with 8" & 10" drivers, such as the T-Series range or DC1000/DC2000 models for example.
Then going larger, you have older stuff like the Goodmans Axiom 201 which can be had for around £200-£300 a pair, sometimes with cabinets, may be worth a punt.
There is the Klipsch Heresey, I had the II model, really nice tight and punchy bass, super efficient but I really could not get on with the midrange/treble on them, far too coloured.
Last ones that come to mind, the Rega Jura, super cheap, usually around £150, nice cherry or black veneer, may well need the bass port plugging to work in a smaller room but great fun!