Aon is a leading professional services firm headquartered in London, United Kingdom. It was founded in 1982 when the insurance brokerage firm Ryan Insurance Group merged with Combined International Corporation, creating a new entity called Aon. The company's headquarters is located in the Aon Center, a prestigious building in the heart of London's financial district.

Aon offers a wide range of products and services in the fields of risk management, insurance brokerage, talent management, and human resources solutions. The company provides expert advice and solutions to help clients mitigate their risks, optimize their workforce, and enhance their organizational performance. Some of its main products include risk consulting, insurance brokerage, reinsurance brokerage, retirement consulting, and health solutions.

On a global scale, Aon operates in more than 120 countries, with a widespread presence across key markets. The company has built a strong network of subsidiaries, joint ventures, and partnerships to expand its reach and enhance its offerings. Noteworthy subsidiaries include Aon Hewitt, a global human resources consulting firm, and Aon Risk Solutions, a division that specializes in risk management and insurance brokerage.

With its international presence and extensive product portfolio, Aon has achieved a strong market position. It is considered one of the largest insurance brokers globally, with significant sales volumes and a vast customer base. The company competes with other major players in the industry such as Marsh & McLennan, Willis Towers Watson, and Gallagher.

Over the years, Aon has undergone several major events and changes in strategy. In 2020, the company announced a strategic partnership with Hudson Structured Capital Management to launch a new insurance product. It has also made a number of acquisitions, such as buying cybersecurity firm Cytelligence and risk management firm CoverWallet, to enhance its offerings and drive growth.

As of the latest updates, Aon is currently awaiting regulatory approval for its proposed merger with Willis Towers Watson. The merger, if approved, will create one of the largest professional services firms in the world. The company continues to focus on delivering innovative solutions to its clients and expand its global footprint.

In conclusion, Aon is a leading professional services firm based in the United Kingdom, offering risk management, insurance brokerage, talent management, and human resources solutions. With a global presence and a strong market position, Aon serves a diverse range of clients and continues to pursue growth through strategic partnerships and acquisitions. The company's proposed merger with Willis Towers Watson further underscores its commitment to expand its offerings and strengthen its position in the industry