The Harley Medical Group (THMG) has been acquired by TriSpan-backed Lasercare Holdings, which operates non-surgical cosmetic clinic chain sk:n, via a pre-pack administration. The move marks a major roll-up in the increasingly active cosmetic surgery sector, where mid-market private equity investor TriSpan is leading consolidation. THMG, which was acquired by turnaround investor RCapital in 2013,…