Social Media Manager wanted to increase follower count

We're looking to increase followers across three social networks. Namely, Google +, LinkedIn, and Twitter. The primary benefit of this is to establish a wider base across these platforms for our B2B content marketing. Hence it is important that the new followers are broadly beneficial and in some way relevant to Lucky Voice Karaoke Solutions. Success would not be measured purely in numbers, but more so by the efficacy of the followers. Good markers for this would be: UK-based Like-minded company examples (technology suppliers in events or leisure) Potential customer examples (decision makers in the leisure sector) Influencers (Leisure bloggers, events bloggers, events media, leisure media etc) Any mix of these would be great, but each platform appeals to distinct sectors. We're looking to grow our follower base across all three as a means to increased engagement with key followers of the Lucky Voice brand. Google + likely has the most varied follower base, being particularly relevant for SEO. The ideal here would be brands or companies that have a certain cool cachet. And that are also themselves active in the network. For instance Cadbury, Red Bull or Virgin. Individuals are still of interest, but less so. LinkedIn showcase pages highlight our products, Pop-up Karaoke and The Singstation. These have quite specific categories of appeal within LinkedIn. For instance: events services; leisure, travel, and tourism; hospitality; entertainment; gambling and casinos; recreational facilities and services; food and beverages. LinkedIn is particularly useful for attracting the attention of leisure and entertainment industry ops managers or site general managers. Instagram seems most useful for attracting both companies and individuals from the events industry. Particularly through the use of the hashtag #eventprofs. Primary material for this accordingly comes from our pop up booth being featured at events, and also karaoke at use in parties hosted by brand partners.