The "British sound" you mentioned is not really as much of a thing today.
Yes there are loudspeakers such as Harbeth and Falcon's versions of the LS 3/5A which tend to feature a prominent smooth midrange a polite treble and tight fast clean but not particularly low bass.
Most of today's higher performance British loudspeakers from B&W and Kef are very low distortion designs which tend to be more balanced then the previously mentioned loudspeakers.
If you like the older more colored Britsh sound of speakers like Harbeth or Proac, you may not like the much less colored more articulate sound of today's best Britsh loudspeakers.
Even ATC which we adore and it so typically Britsh sounds very clean with an accurate midrange and very low levels of coloration.
The new R series is much more refined than the older R series it replaces, the older R series was a bit peaky but they created a very exciting sound, the new R series comes a lot closer to the Reference product in that it images more precisely, is faster with more articulate bass and the treble is detailed with more refinement.
We just did a shoot out of the R 11 vs the Elac Adante AF 61 vs the Quad Z4 and the client choose the Kef R 11 as his favorite.
Hope that helps
Dave and Troy
Audio Doctor NJ

