Which British brand is a major manufacturer of aircraft engines?

Rolls-Royce is a prominent British brand recognized for its significant role in manufacturing aircraft engines. The company has a long-standing history in the aerospace industry, producing engines for both commercial and military aircraft. Rolls-Royce is renowned for its innovation and high-quality engineering, establishing itself as a leader in aviation technology.

While Boeing and Airbus are major players in the global aviation industry, they are American and European companies, respectively, and primarily deal with the manufacturing of complete aircraft rather than focusing on a specific British brand. Aston Martin, known for luxury automobiles, does not have a connection to aircraft engines, further differentiating Rolls-Royce's standing as the correct answer in this context.