Actis, an investor of private capital into global emerging markets, has entered into agreements to acquire a controlling interest in Octotel, a fibre-to-the-home operator in South Africa for an enterprise value of R2.3 billion (about $140 million). At the same time, Actis signed agreements to acquire a non-controlling interest in RSAWEB, a leading internet service provider in South Africa. The transactions are subject to regulatory approval.

Octotel is a fibre network operator in the W...