Marketing Assistant

I am looking for someone who can market my business and promote my company for me. My aim is for this person to help me reach out to other companies and find me new clients. I would need help with Social Media Marketing, Emailing companies, Phoning companies and making sure companies know about my services. You have to have experience in all the following tasks I mentioned and experience in Marketing and Administration.

Hours will start off as 3 hours a week but if everything is going well I will be looking to up these hours as I would like this to be an ongoing position for the right person. Living near Essex would be a bonus but not essential as this will be a remote position.