The European Commission has adopted the final text of the long-awaited Non-Horizontal Merger Guidelines. The Commission had previously launched a public consultation with the publication of the draft guidelines at the beginning of the year. The Guidelines apply to vertical mergers between firms that can have a supplier-customer relationship, and also apply to conglomerate mergers where firms are active on closely related markets. The text describes the market conditions that might lead the Commission to have concerns in non-horizontal mergers. In an attempt to increase legal certainty, the text provides a rather low “safe-harbour” of market share (30 per cent) and market concentration (post-merger HHI of 2000), below which it is unlikely that any concerns will arise