Mobile network operator Vodafone and cable and broadband provider Liberty Global are to merge their Dutch operations to create a 50-50 joint venture in the Netherlands. The venture will bring together Liberty's Dutch operation Ziggo - a provider of fibre-based broadband , TV and landline services - with Vodafone's mobile network to create a quad-play operator with combined annual revenues of around a 4.4bn , based on results to the end of 2015.