Cyber Security Company Certification Guidance

I'm in the process of launching an open cyber security company in the UK, focusing primarily on web, Network and Application Security. I need expert advice on the necessary certifications for my company to be recognized and trusted in this field. Please provide a comprehensive list of the required certifications, as well as any optional ones that could enhance our credibility.

Ideal skills for this project include:
- Extensive knowledge of cyber security industry standards and practices
- Familiarity with UK cyber security regulations and certification bodies
- Experience in advising cyber security firms on certification processes.