Edifier speakers are good value, which is why they're popular.
I've heard the ever-popular R1280, and for a plug-and-play solution, they're hard to beat for that price (~$100-130 USD), especially compared to the typical "computer" speakers.
That said, they are still a pair of relatively cheap speakers, so if you want something better sounding, consider something like the R1700 and above, though you may dislike the proprietary interconnecting cable that Edifier likes to use on their higher end models.
The Micca MB42 also have good reputation, but since they're passive, you'd also have to factor in the cost of an amp into the equation, in addition to the decision-making process. The MB42x has a better crossover, so it's the preferred choice. There is a powered version, the PB42x, but they're not as popular; the hobbyist crowd prefers separates. The RB42 are the step up option, but will also require an amp.
Another favorite are the JBL 305 monitors, but they're a bit larger, and being a monitor, aimed to be more clinical than fun.
Beyond the 200 GBP figure, not sure what your other constraints are, such as space, etc. Keep in mind that many people find small desktop speakers lacking in bass (3- to 4-inch drivers have their limits), so the flexibility of a sub out could be a factor.
If Audioengine seems appealing, also consider Kanto, and one brand we don't get here,
Steljes; they all target similar markets.
I have a pair of the Ai40s, and have been quite happy with them, but I guess Fluance doesn't reach the UK.
