Thanks for the corrections/updates:

UK

Prototypes
XX946/WT P02, RAF Museum, Cosford – 8883M
XX947 P03, Transair shop, Shoreham Airport – 8797M
XZ630 P12, Halton – 8976M
XZ631 P15, Yorkshire Air Museum, Elvington (modified with GR4 “parts”)

GR.1/GR.4
ZA254, GIA, Coningsby (not preserved) – 9253M
ZA267, GIA, Marham (not preserved) – 9253M
ZA319, Gate guard, DSDA (Defence Storage & Distribution Agency) headquarters, Bicester, Oxfordshire
ZA354, Yorkshire Air Museum, Elvington
ZA362/AJ-F, Highland Aviation Museum, Inverness (Tornado has been stripped for spares and needs re-assembly)
ZA374/CN, USAF Museum, Dayton, USA
ZA407, Gate guard, Marham – 9336M
ZA457/AJ-J, RAF Museum, Hendon
ZA465/FF, Imperial War Museum, Duxford
ZA475, Gate guard, Lossiemouth

????? , RAF Millom Museum, Haverigg, cockpit

F.3
ZE760, To/ex AMI MM7206, RAF Coningsby
ZE934, Museum of Flight, East Fortune, East Lothian
ZE967, RAF Leuchars, Fife

Italy

MM7001/RS-01, Museo Storico dell’Aeronautica Militare, Italy
ZE836, To AMI as MM7210, Preserved Gioia del Colle, Italy

Germany

XX948 P06, Hermeskeil, Germany – 8879M
44+56, “Luftwaffenmuseum”, Gatow museum, Germany

Any others??

Another slight update, any others?:

Europe

Prototypes
XP831 – P.1127, Science Museum, London
XP980 – P.1127, Fleet Air Arm Museum, Yeovilton
XP984 – P.1127, Brooklands Museum, Brooklands

XV277 – P.1127 (RAF), Museum of Flight, East Fortune, much modified, pseudo GR3 nose and production intakes – once carried mock up radar nose as part of SHAR sales project
XV278 – P.1127 (RAF), Luftwaffenmuseum, Berlin, Germany , ex-4 Squadron
XV279 – P.1127 (RAF), RAF Wittering
XV280 – P.1127 (RAF), RNAS Yeovilton, nose section only

Harrier GR.1:
XV798 – Bristol Aero Collection, Kemble

Harrier GR.3:
XV744 – Defense Academy, Shrivenham, Swindon
XV748 – Yorkshire Air Museum, Elvington
XV751 – Gatwick Aviation Museum, Charlwood, painted and marked as a Royal Navy aircraft
XV752 – 2366 Squadron Air Training Corps, Bletchley Park
XV759 – Hitchin, Herts, privately owned
XV760 – Dunsfold (vicinity of), privately owned, nose section only
XV779 – RAF Wittering, gate guard
XV784 – Boscombe Down museum, nose section
XV804 – North Luffenham, Germany
XV810 – Bruntinthorpe, privately owned, stored
XW763 – Imperial War Museum, Duxford, now to privately owned nose section in Leicestershire
XW768 – Cosford
XW923 – RAF Wittering, nose section only
XW924 – Cottesmore
XZ130 – Cosford
XZ133 – Imperial War Museum, Duxford
XZ964 – Royal Engineers Museum, Chatham
XZ968 – Muckleburgh Collection
XZ997 – RAF Museum, Hendon
XZ998 – Flugausstellung Hermeskeil, Germany
ZD670 – nose section privately owned
????? – RNAS Predannack

Harrier T.2
XW264 – Jet Age Museum, Staverton, nose section

Harrier T.4
XW265 – Leuchars, Fife, privately owned by Stewart Milne, nose section only
XW270 – Coventry University, wings from XV748
XW272 – privately owned by Ian Sheffield, originated from Dunsfolds dump where ‘272’s cockpit has been noted
XW934 – FAST museum, Farnborough
XZ146 – RAF Wittering

Harrier T.52:
ZA250 (G-VTOL) – Brooklands Museum, Brooklands

AV-8A:
159233 – Imperial War Museum North, Manchester

AV-8B
162730 – RAF St.Athan came from RAF Wyton

Sea Harrier FRS.1:
XZ493 – Fleet Air Arm Museum, Yeovilton

Sea Harrier FA.2:
XZ457 – Boscombe Down Museum, Wiltshire, rebuilding
XZ499 – Fleet Air Arm Museum, Yeovilton, with the tail fin from ZA195
ZA175 – Norfolk and Suffolk Aviation Museum, Flixton
ZA176 – Newark Air Museum, Winthorpe
ZA195 – Fleet Air Arm Museum, Yeovilton – left FAAM 18/4/05 for Cronifer Metals, acquired by GJD for Neil Hallett/Farnborough
ZD578 – RNAS Yeovilton, gate guard
ZD610 – Dunsfold, privately owned by GJD Services
ZE693 – Dukinfield, Greater Manchester, ‘The Snipe’ pub
ZE694 – Midland Air Museum, Coventry
ZH807 – privately owned, nose section only

Harrier T.4N
XW268 – Sussex, “spares recovers” company owned, “promised” to the Gatwick museum, Charlwood

North America

XV-6A Kestrel
XS688 (64-18262) – United States Air Force Museum, Wright-Patterson, Dayton, OH
XS689 (64-18263) (NASA521) – Virginia Air and Space Center / Hampton History Center, combination of the fuselage of Kestrel XS689 and the wing of XS694
XS690 (64-18264) – United States Army Aviation Museum , Ft. Rucker, AL, storage
XS691 (64-18265) – dropped in a river by accident from a chopper while being airlifted to the Virginia Science Museum.
XS692 (64-18266) (NASA520) – Air Power Park and Museum, Hampton, VA
XS694 (64-18267) – Fuselage formerly at Kissimmee, Florida, formerly owned by Tom Reilly, sold to disused paint ball park, Jack Frost Mountain Company, eBay

AV-8A
158966 – Canada Aviation Museum, Ottawa, Ontario
158975 – National Museum of Naval Aviation, Pensacola, FL
159241 – Pima County Air Museum, Pima County, AZ
?????? (AV-8A?) – Hangar 25 Air Museum, Big Spring, TX,
?????? ‘719’ – NASA Museum, Moffett Field

AV-8B
159381 – Western Aerospace Museum, Oakland, CA
161396 – Naval Air Warfare Center, MY, first AV-8B built
161397 – Carolinas Aviation Museum, Charlotte/Douglas International Airport, NC, third US built Harrier / second Flight test aircraft
?????? – Charles Lindbergh Airport, Chesterfield, MO

AV-8C
158977 – Museum of Flight, Seattle, WA
159232 – Air-Sea-Space Museum, USS Intrepid, NY

TAV-8A
159381 – Oakland Airport, CA, fake NASA markings

Flying Heritage in WA has 2 Harriers both British, one all white one in phony Marine scheme

South America

Harrier GR.3:
XZ970 – Santiago-Los Cerrillos airfield, Chilean National Air & Space Museum, Santiago, Chile
ZD668 – Belize City, Belize

Asia

Harrier GR.3:
XZ129 – Ashburton Aviation Museum, Ashburton, South Canterbury, NZ
XZ965 – Institute of Aeronautical Engineering, Beijing, China

Sea Harrier FRS.1:
IN621 – Naval aviation museum, Dabolim, Goa, India

This list is coming along nicely. Here is some more updates with some two-seaters:

Prototypes
XP831 – first P.1127, Science Museum, London
XV278 – third P.1127, Luftwaffenmuseum, Berlin
XP980 – fifth P.1127, Fleet Air Arm Museum, Yeovilton
XP984 – sixth P.1127, Brooklands Museum, Brooklands

Harrier GR.1:
XV277 – Museum of Flight, East Fortune
XV798 – Bristol Aero Collection, Kemble

Harrier GR.3:
XV744 – Defense Academy, Shrivenham, Swindon
XV748 – Yorkshire Air Museum, Elvington
XV751 – Gatwick Aviation Museum, Charlwood
XV752 – 2366 Squadron Air Training Corps, Bletchley Park
XV810 – Bruntinthorpe, privately owned, stored
XW763 – Imperial War Museum, Duxford, now is a nose section privately owned in Leicestershire
XW768 – Cosford
XW924 – Cottesmore
XZ130 – Cosford
XZ133 – Imperial War Museum, Duxford
XZ964 – Royal Engineers Museum, Chatham
XZ965 – Institute of Aeronautical Engineering, Beijing, China
XZ968 – Muckleburgh Collection
XZ997 – RAF Museum, Hendon
XZ998 – Flugausstellung Hermeskeil, Germany
ZD670 – nose section privately owned

Harrier T.2
XW264 – Jet Age Museum, Staverton, nose section

Harrier T.4
XW265 – Leuchars, Fife, privately owned by Stewart Milne
XW272 – privately owned by Ian Sheffield, originated from Dunsfolds dump where ‘272’s cockpit has been noted
XW934 – FAST museum, Farnborough
XZ146 – Gate guard, RAF Wittering
X???? – Coventry University

Harrier T.52:
ZA250 (G-VTOL) – Brooklands Museum, Brooklands

AV-8A:
159233 – Imperial War Museum North, Manchester

Sea Harrier FRS.1:
XZ493 – Fleet Air Arm Museum, Yeovilton

Sea Harrier FA.2:
XZ499 – Fleet Air Arm Museum, Yeovilton
ZA175 – Norfolk and Suffolk Aviation Museum, Flixton
ZA176 – Newark Air Museum, Winthorpe
ZA195 – Fleet Air Arm Museum, Yeovilton – left FAAM 18/4/05 for Cronifer Metals, acquired by GJD for Neil Hallett/Farnborough
ZE693 – Dukinfield, Greater Manchester, ‘The Snipe’ pub
ZE694 – Midland Air Museum, Coventry

Harrier T.4N
XW268 – Sussex, “spares recovers” company owned, on loan to the Gatwick museum, Charlwood

North America

XV-6A Kestrel
XS688 (64-18262) – United States Air Force Museum, Wright-Patterson, Dayton, OH
XS689 (64-18263) (NASA521) – Virginia Air and Space Center / Hampton History Center, combination of the fuselage of Kestrel XS689 and the wing of XS694
XS690 (64-18264) – United States Army Aviation Museum , Ft. Rucker, AL, storage
XS691 (64-18265) – dropped in a river by accident from a chopper while being airlifted to the Virginia Science Museum.
XS692 (64-18266) (NASA520) – Air Power Park and Museum, Hampton, VA
XS694 (64-18267) – Fuselage formerly at Kissimmee, Florida, formerly owned by Tom Reilly, sold to disused paint ball park, Jack Frost Mountain Company, eBay

AV-8A
158966 – Canada Aviation Museum, Ottawa, Ontario
159241 – Pima County Air Museum, Pima County, AZ
?????? (AV-8A?) – Hangar 25 Air Museum, Big Spring, TX,
?????? ‘719’ – NASA Museum, Moffett Field

AV-8B
159381 – Western Aerospace Museum, Oakland, CA
161396 – Naval Air Warfare Center, MY, first AV-8B built
161397 – Carolinas Aviation Museum, Charlotte/Douglas International Airport, NC, third US built Harrier / second Flight test aircraft

AV-8C
159232 – Air-Sea-Space Museum, USS Intrepid, NY
?????? – National Museum of Naval Aviation, Pensacola, FL

South America

Harrier GR.3:
ZD668 – Belize City, Belize
????? – Chilean National Air & Space Museum, Santiago, Chile

This also may be of interest:

http://www.sweptwings.co.uk/tornado_gallery.htm