Make more clients for my business

I am seeking a skilled freelancer to enhance my client acquisition efforts for my healthcare business, which specializes in conducting D4 medical assessments for HGV drivers in Birmingham. Despite being operational for 18 months, I have struggled to attract clients, including lorry, truck, and bus drivers. I aim to establish connections with trucking firms, HGV training organizations, and bus companies. My services can be offered at my office or at client locations. I require assistance in securing contracts with these companies to expand my clientele and increase business growth.