I tested Kensaki Bulls Eye Feeder Dyneema 0.14mm - 6,8 kg - 15 lb.
This line is probably not (yet) introduced in the UK, but its performances are comparable with what I found with other more popular brands.
It is a very supple, round, smooth, uncoated woven line with very good knot strength. (I seldom found problems with knots in dyneema.) The line-core is probably polyester, responsible for its promised sinking properties.
A problem with braids is that the line is very easily compressed, so you can't measure them with common tools. The best way therefore is comparing them with calibrated mono under a strong magnifying-glass.
I found a diameter about 0.20 instead of 0.14. This is common practice with braids.
However, as suspected, the breakingstrain of 15 lb turned out to be a meagre 8 lb. I found once an 11 lb measurement, but the line parted most of the time around the 8 lb mark.
Furthermore, the line did not sink. Because you can?t expect a new line to sink immediately, it was thoroughly washed first. After 12 hours it still floated on the surface. After washing the line with soap there was little improvement. I had the same sinking-problems with Suffix Feeder Dyneema, a line which is very similar to the Kensaki. I have to say I did not yet fish this line, so the sinking problems could be not that severe.