Logo and branding designer for security installation company.

We are a security installation company who have been operating for about 15 years. We want to modernise our branding, logos and website ahead of an expansion into social media etc. We already have a logo but feel it could do with modernisation as well as some variants for different uses (thumbnails, shapes, sub businesses etc). Happy to listen to offers for logo only, or complete package with website design depending on skill set.