BM Logo Re design for Social Media

We are an established business with logo and branding. Our site has just been refreshed and we are quite happy with it, although our social media thumbnails need re working to create the best possible perception. If you currently look at our website; [login to view URL] It is great, but our SM platforms need something re designed that is hi quality and makes the most of the space. [login to view URL] [login to view URL] http://www.linkedin.com/company/benchmarque-hospitality-&-event-recruitment?trk=parent_company_logo both standard logos and square logos need re work. We use a black background on the site, but doesn't mean we have to use this everywhere. We can use white. It would be great if the original files attached could also be optimised for higher resolution and inverted so we have black and white versions of each. nb. For Facebook, we may not need the actual name and tagline as its already on the page. Feel free to provide concepts based on what looks best on the page considering our business name is already present.