SJ Berwin, Kirkland & Ellis and Simpson Thacher & Bartlett have won roles advising on private equity firm Kohlberg Kravis Roberts' (KKR's) takeover of Serbia's largest cable company in a deal worth €1bn (£847m).

The buyout giant has bought telecommunications company SBB/Telemach from private equity group Mid Europa Partners. The acquisition marks US-headquartered KKR's first investment in eastern Europe. It is expected to complete by the first quarter of 2014.

SJ Berwin acted for SBB/Telemach founder Dragan Solak with a team led by client relationship partner and private equity lawyer Martin Bowen, who was supported by tax partner Gareth Amdor.

Kirkland & Ellis' London office advised longstanding client Mid Europa on its disposal with a team comprising corporate partners Rory Mullarkey and Andrej Wolf, and debt finance partners John Markland and William Burke.

KKR instructed a team from Simpson Thacher's City arm, with M&A partner Alvaro Membrillera leading.

Bowen said: "This landmark transaction demonstrates the potential for excellent private equity returns from less developed deal markets, if you are able to back a company with strong executive leadership and management like SBB/Telemach."

Simpson Thacher is a regular adviser to KKR. Earlier this month the firm represented the group on its $1bn (£627m) purchase of construction manufacturing assets Crosby and Acco from Melrose Industries.

Other recent Simpson Thacher mandates for KKR include March's $3.9bn (£2.4bn) acquisition of industrial machinery manufacturer Gardner Denver.