What was the name of the first jet bomber to enter service with the RAF?

The Canberra was indeed the first jet bomber to enter service with the Royal Air Force (RAF). Introduced in the early 1950s, it marked a significant technological advancement in military aviation as it was designed to operate at higher speeds and altitudes compared to its propeller-driven predecessors. The Canberra's performance and versatility made it a vital component of Britain's nuclear deterrent strategy during the Cold War era.

Its design allowed for a range of missions beyond just bombing, including reconnaissance and electronic warfare. The aircraft achieved notable success in various conflicts and served the RAF for many years, further solidifying its historical significance.

In contrast, the Lancaster and Mosquito were famous for their roles during World War II, operating primarily as piston-engine bombers. The Vulcan, while also a famous jet bomber, entered service after the Canberra and was part of the later generation of bombers. The Canberra's pioneering role in jet-powered bombing missions is why it is recognized as the first jet bomber for the RAF.