Based on unclassified sources

British extra-large UUV: Moray
The MSubs MORAY is a multi-role XLUUV (extra-large unmanned underwater vehicle) designed for both combat and reconnaissance. The Royal Navy have just awarded MSubs a contractto build an XLUUV. While the initial vehicle is likely to be an adaption of the company's MAST or another existing hull, the Moray paints an interesting picture of future possiblities for the RN.
Royal Navy British MSubs Moray XLUUV
The Moray modular design allows for ASW, ASuW, MCM and ISR mission fits. It can also support Special Forces, act as an underwater logistics hub and support smaller AUVs (autonomous underwater vehicles). It can also act as an ASW trainer and support tactics and doctrine development.

It is designed to act independently and as a fully networked sensor capable of automatically queuing manned and unmanned sensors to assist in the localisation and prosecution of Contacts of Interest (COIs). COIs include surface and subsurface vessels (including AUVs), mine like objects and specific emissions on the EM spectrum. From MSubs website

Royal Navy British MSubs Moray XLUUV

Get The essential guide to World Submarines
This Covert Shores Recognition Guide Covers over 80 classes of submarines including all types currently in service with World Navies.
Check it out on Amazon

Related articles (Full index of popular Covert Shores articles)
FlagFlag Dry Combat Submersible (DCS)
Flag British SSN(R) next generation Royal Navy SSN
Flag XLUUV armed extra-large UUV
Flag Surcouf Cruiser Submarine w/Cutaway
Flag Attack Class
Flag SMX-31 future submarine concept ('The Electric') w/Cutaway
Flag Project 885 'YASEN' (Severodvinsk Class) SSGN. w/Cutaway
Flag A-26 Blekinge Class attack submarine. w/Cutaway
Flag HUSKY Class future attack submarine
Flag Chinese HSU-001 LDUUV
Flag Sub ASWUUV anti-submarine unmanned underwater vehicle
Biomimetic Underwater Vehicles
Flag Poseidon Intercontinental Nuclear-Powered Nuclear-Armed Autonomous Torpedo, and countering it
Flag Russian Navy Beluga whale
Flag Cephalopod armed extra-large UUV
Flag Flag Flag Flag Flag Nordenfelt steam powered submarines of the 1880s. w/Cutaway