Hi,
Most speakers, though good, are designed with certain philosophy, for their target audience in mind & utility factor.
Placed below are some speakers, their respective sound signature & "utility" orientation
1. B&W: Warm & Laid Back. For soothing experience. Tilted towards Music, not movies. Expensive
2. KEF R Series: Similar to B&W, though warmer & more laid back. Musical, not for movies. Less expensive than B&W though.
3. Monitor Audio: Agile & Detailed. Equally good for Music & Movies. Better build, better looks, better performance for money. High VFM product.
4. Dali: More controlled than Monitor Audio. Touch better in sound quality - tighter & louder. More expensive than MA though.
5. Klipsch: Happy Speakers, ready to party mood. Loud & designed to Rock without question. Excellent for movies, party music - though not for delicate listening. Quite inexpensive in comparison to aforesaid, UK prices could be little higher than US though.
Check Klipsch Heresy range (current model is Heresy III). A 3-way speaker with excellent build quality. Perhaps world shortest, standing 2 feet tall. It can seriously ROCK, besides vintage looks.
Available as single piece too, so can use as 3.0/5.0. Not meant for delicate, warm, laid back listening. Can try used on eBay, Gumtree well within your budget & you can't go wrong.
Klipsch Warning: Neighbours might complain, but owners will rock.
PS: Am midway in process of auditioning. Opinions based on direct listening experience & not "reviews".
Thanks