Ben and Jos White, the technology entrepreneur brothers, are planning to use part of the £100m they received for the sale of Messagelabs earlier this month to create a new UK-focused technology venture capital fund.

The pair will sink about £20m into the fund, called Notion Capital, whose founding partners include other former Messagelabs executives. They hope further backers, gleaned from their many years in the UK technology industry, will also contribute to create a fund of about £100m.