Finding potential clients for mobile billboard advertisements on vans in london

I am looking to hire a freelancer to help me find potential clients for mobile billboard advertisements on vans in London. My target audience will be companies that generally advertise on static billboards. My aim is to increase brand awareness. I prefer to connect with potential clients through direct contact. The freelancer I am looking for should have knowledge of marketing, sales, and networking methods, and should be comfortable using both online platforms and offline sources to generate leads. They should also have great communication and interpersonal skills in order to make strong connections with potential clients. The freelancer must be capable of developing creative strategies to ensure that my message reaches the right audience. I expect the freelance to provide regular updates throughout this project and offer potential solutions and strategies as needed.