The UK has six Type 45 (Daring-class) destroyers in total, all in the Royal Navy fleet.

Quick Scoop: Fleet Size vs Availability

  • A total of six Type 45 destroyers were built and commissioned into Royal Navy service, after initial plans for 12 were cut to 8 and then to 6.
  • These six ships are: HMS Daring, HMS Dauntless, HMS Diamond, HMS Dragon, HMS Defender, and HMS Duncan.

However, not all of them are always ready to deploy at the same time:

  • In recent updates, the UK Ministry of Defence has repeatedly described the class as “six Type 45 destroyers,” confirming that six remain in the core fleet.
  • Because of refits and the Power Improvement Project to fix propulsion and power issues, only a subset are operational at any one moment (for example, two or three available in late 2024–early 2026).

So, in simple terms: the UK has six Type 45 destroyers , but usually only a few of them are fully operational at any given time due to maintenance and upgrade cycles.

Information gathered from public forums or data available on the internet and portrayed here.