LONDON--(BUSINESS WIRE)--Praesidian Capital Europe, a leading provider of senior and subordinated debt along with growth capital announced today its first lien debt investment in Pyser-SGI Group Limited (“Pyser”), a leading optical equipment specialist based in the UK. Praesidian Capital Europe provided its funding in support of the buyout of Pyser by Privet Capital LLP, a London based private equity firm. Pyser was acquired from its existing management team which has owned the business since 1