The FTSE Small Cap index and junior-listed AIM shares climb 0.6 percent and 0.3 percent respectively, lagging the mid-caps and the blue chips, both up 1.5 percent.
Aggregates business Breedon Aggregates (LSE: BREE.L - news) advances 3.2 percent after the company's full-year results, which shows a 29.5 percent rise in revenues to 224.5 million pounds ($375.3 million).
"Good figures from Breedon notably reflect the benefit of acquisitions, but also a good volume performance over and above industry levels," Numis Securities writes in a note.
"In the coming year we expect a better macro outlook, and the group should once again outpace volume increases while self-help (including full integration of the Scottish acquisition) will benefit margins," the broker adds.
Trading volume in Ultrasis stands at more than six times its 90-day daily average.
($1 = 0.5982 British pounds)
Reuters messaging rm://firstname.lastname@example.org