Oxford Capital Partners and Qualcomm Ventures have co-led a £5m (€6.6m) second round of funding for wireless network optimisation provider Arieso.
HgCapital has sold Clarion Events to US private equity firm Veronis Suhler Stevenson for an enterprise value of £120.5m (€160m).
Ingenious Media Active Capital has invested an additional £2m (€2.7m) in television production company Whizz Kid Entertainment.
Terra Firma Capital Partners and French industrial group Suez are believed to be close to making an offer for waste management and recycling company Biffa.
Acuity Capital, a new firm set up by the management team for the Electra Kingsway VCTs, has acquired Electra Quoted Management.
Solar cell manufacturer Odersun has raised €40m in venture financing and €21m in government grants to build its second factory.