Mark	Authority		Mark	Authority		Mark	Authority
	A	London		AA	Southampton (County)		BA	Salford
	B	Lancashire C C		AB	Worcestershire		BB	Newcastle-upon-Tyne
	C	Yorkshire West Riding		AC	Warwickshire		BC	Leicester
	D	Kent C C		AD	Gloucestershire		BD	Northamptonshire
	E	Staffordshire C C		AE	Bristol C B C		BE	Lincolnshire (Parts of Lindsey)
	F	Essex C C		AF	Cornwall C C		BF	Dorsetshire C C
							BF	Staffordshire C C
	G	Glasgow		AG	Ayr C C		BG	Birkenhead C B C
	H	Middlesex C C		AH	Norfolk		BH	Buckinghamshire C C
				AI	Meath (County)		BI	Monaghan
	J	Durham C C		AJ	Yorkshire North Riding		BJ	[East] Suffolk
	J	Jersey
	K	Liverpool C B C		AK	Bradford C B C		BK	Portsmouth
	L	Glamorganshire C C		AL	Nottinghamshire		BL	Berkshire
	M	Cheshire C C		AM	Wiltshire		BM	Bedfordshire
	N	Manchester C B C		AN	Isle of Man (MAN only)		BN	Bolton C B C
				AN	West Ham (exc MAN)
	O	Birmingham C B C		AO	Cumberland C C		BO	Cardiff C B C
	P	Surrey C C		AP	Sussex (East)		BP	West Sussex
	R	Derbyshire C C		AR	Hertfordshire		BR	Sunderland
	S	Edinburgh B C		AS	Nairn C C		BS	Orkney
	T	Devon C C		AT	[Kingston upon] Hull		BT	Yorkshire East Riding
	U	Leeds C B C		AU	Nottingham		BU	Oldham
	V	Lanark C C		AV	Aberdeenshire		BV	Blackburn C B C
	W	Sheffield C B C		AW	Shropshire		BW	Oxfordshire
	X	Northumberland C C		AX	Monmouthshire		BX	Carmarthenshire C C
	Y	Somerset C C		AY	Alderney		BY	Croydon C B C
				AY	Leicestershire C C
	Z	Dublin (County)		AZ	Belfast C B C		BZ	Down (County)
	Mark	Authority		Mark	Authority		Mark	Authority
	CA	Denbighshire C C		DA	Wolverhampton		EA	West Bromwich
	CB	Blackburn C B C		DB	Stockport		EB	[Isle of] Ely C C
	CC	Caernarvonshire C C		DC	Middlesbrough		EC	Westmorland
	CD	Brighton C B C		DD	Gloucestershire		ED	Warrington
				DD	Northampton C B C
	CE	Cambridgeshire C C		DE	Pembrokeshire		EE	Grimsby
	CF	[West] Suffolk		DF	Gloucestershire		EF	West Hartlepool
	CG	Southampton County		DG	Gloucestershire		EG	[Soke of] Peterborough
	CH	Derby C B C		DH	Walsall		EH	Stoke-on-Trent
	CI	Laois		DI	Roscommon		EI	County Sligo
	CJ	Herefordshire		DJ	St.Helens (Lancs.)		EJ	Cardiganshire C C
	CK	Preston		DK	Rochdale		EK	Wigan
	CL	Norwich		DL	Isle-of-Wight		EL	Bournemouth C B C
	CM	Birkenhead C B C		DM	Flintshire		EM	Bootle C B C
	CN	Gateshead		DN	York		EN	Bury C B C
	CO	Plymouth		DO	Lincolnshire (Holland)		EO	Barrow-in-Furness C B C
	CP	Halifax		DP	Reading		EP	Montgomeryshire
	CR	Southampton		DR	Plymouth		ER	Cambridgeshire C C
	CS	Ayrshire C C		DS	Peebles		ES	Perth
	CT	Lincolnshire (Kesteven)		DT	Doncaster		ET	Rotherham
	CU	South Shields		DU	Coventry C B C		EU	Brecknockshire C C
	CV	Cornwall C C		DV	Devon		EV	Essex
	CW	Burnley C B C		DW	Newport (Mon)		EW	Huntingdonshire
	CX	Huddersfield		DX	Ipswich		EX	[Great] Yarmouth
	CY	Scilly Isles (SCY only)
	CY	Swansea		DY	Hastings		EY	Anglesey C C
	CZ	Belfast C B C		DZ	[County] Antrim		EZ	Belfast C B C
	Mark	Authority		Mark	Authority		Mark	Authority
	FA	Burton-on-Trent C B C		GA	Glasgow		HA	Smethwick
	FB	Bath		GB	Glasgow		HB	Merthyr Tydfil
	FC	Oxford C B C		GC	London		HC	Eastbourne
	FD	Dudley C B C		GD	Glasgow		HD	Dewsbury
	FE	Lincoln		GE	Glasgow		HE	Barnsley C B C
	FF	Merioneth		GF	London		HF	Wallasey
	FG	Fife		GG	Glasgow		HG	Burnley C B C
	FH	Gloucester		GH	London		HH	Carlisle C B C
	FI	Tipperary (N.Riding)		GI	Tipperary (S.Riding)		HI	Tipperary (S.Riding)
	FJ	Exeter		GJ	London		HJ	Southend-on-Sea
	FK	Worcester		GK	London		HK	Essex
	FL	[Soke of] Peterborough		GL	Bath		HL	Wakefield
	FM	Chester C B C		GM	Motherwell and Wishaw		HM	East Ham
	FN	Canterbury C B C		GN	London		HN	Darlington C B C
	FO	Radnorshire		GO	London		HO	Hampshire
	FP	Rutland		GP	London		HP	Coventry C B C
	FR	Blackpool C B C		GR	Sunderland		HR	Wiltshire
	FS	Edinburgh		GS	Perth		HS	Renfrewshire
	FT	Tynemouth		GT	London		HT	Bristol C B C
	FU	Lincolnshire (Lindsey)		GU	London		HU	Bristol C B C
	FV	Blackpool C B C		GV	[West] Suffolk		HV	East Ham
	FW	Lincolnshire (Lindsey)		GW	London		HW	Bristol C B C
	FX	Dorset		GX	London		HX	Middlesex
	FY	Southport		GY	London		HY	Bristol C B C
	FZ	Belfast C B C		GZ	Belfast C B C		HZ	Tyrone
	Mark	Authority		Mark	Authority		Mark	Authority
	IA	[County] Antrim		JA	Stockport		KA	Liverpool
	IB	Armagh C C		JB	Berkshire		KB	Liverpool
	IC	[County] Carlow		JC	Caernarvonshire C C		KC	Liverpool
	ID	[County] Cavan		JD	West Ham		KD	Liverpool
	IE	[County] Clare		JE	[Isle of Ely] C C		KE	Kent
	IF	[County] Cork		JF	Leicester		KF	Liverpool
				JG	Canterbury C B C		KG	Cardiff C B C
	IH	[County] Donegal		JH	Hertfordshire		KH	Kingston-upon-Hull
				JI	Tyrone		KI	[County] Waterford
	IJ	[County] Down		JJ	London		KJ	Kent
	IK	[County] Dublin		JK	Eastbourne		KK	Kent
	IL	Fermanagh		JL	Lincolnshire (Holland)		KL	Kent
	IM	[County] Galway		JM	Westmorland		KM	Kent
	IN	[County] Kerry		JN	Southend-on-Sea		KN	Kent
	IO	[County] Kildare		JO	Oxford C B C		KO	Kent
	IP	[County] Kilkenny		JP	Wigan		KP	Kent
	IR	Offaly		JR	Northumberland		KR	Kent
	IS	[County] Mayo		JS	Ross & Cromarty		KS	Roxburgh
	IT	Leitrim		JT	Dorset		KT	Kent
	IU	[County] Limerick		JU	Leicestershire C C		KU	Bradford C B C
	IV	[County] Limerick		JV	Grimsby		KV	Coventry C B C
	IW	[County] Londonderry		JW	Wolverhampton		KW	Bradford C B C
	IX	[County] Longford)		JX	Halifax		KX	Buckinghamshire C C
	IY	Louth (County)		JY	Plymouth		KY	Bradford C B C
	IZ	[County] Mayo		JZ	Down		KZ	Antrim
	Mark	Authority		Mark	Authority		Mark	Authority
	LA	London		MA	Cheshire C C		NA	Manchester
	LB	London		MB	Cheshire C C		NB	Manchester
	LC	London		MC	Middlesex		NC	Manchester
	LD	London		MD	Middlesex		ND	Manchester
	LE	London		ME	Middlesex		NE	Manchester
	LF	London		MF	Middlesex		NF	Manchester
	LG	Cheshire C C		MG	Middlesex		NG	Norfolk
	LH	London		MH	Middlesex		NH	Northampton
	LI	Westmeath (County)		MI	[County] Wexford		NI	[County] Wicklow
	LJ	Bournemouth C B C		MJ	Bedfordshire		NJ	[East] Sussex
	LK	London		MK	Middlesex		NK	Hertfordshire
	LL	London		ML	Middlesex		NL	Northumberland
	LM	London		MM	Middlesex		NM	Bedfordshire
	LN	London		MN	Isle of Man		NN	Nottinghamshire
	LO	London		MO	Berkshire		NO	Essex
	LP	London		MP	Middlesex		NP	Worcestershire
	LR	London		MR	Wiltshire		NR	Leicestershire C C
	LS	Selkirk		MS	Stirling		NS	Sutherland
	LT	London		MT	Middlesex		NT	Shropshire
	LU	London		MU	Middlesex		NU	Derbyshire
	LV	Liverpool		MV	Middlesex		NV	Northamptonshire
	LW	London		MW	Wiltshire		NW	Leeds
	LX	London		MX	Middlesex		NX	Warwickshire
	LY	London		MY	Middlesex		NY	Glamorganshire
	LZ	Armagh C C		MZ	Belfast C B C		NZ	Londonderry
	Mark	Authority		Mark	Authority		Mark	Authority
	OA	Birmingham C B C		PA	Surrey		QA	Foreign Visitors
	OB	Birmingham C B C		PB	Surrey		QB	Foreign Visitors
	OC	Birmingham C B C		PC	Surrey		QC	Foreign Visitors
	OD	Devon		PD	Surrey		QD	Foreign Visitors
	OE	Birmingham C B C		PE	Surrey		QE	Foreign Visitors
	OF	Birmingham C B C		PF	Surrey		QF	Foreign Visitors
	OG	Birmingham C B C		PG	Surrey		QG	Foreign Visitors
	OH	Birmingham C B C		PH	Surrey		QH	Foreign Visitors
	OI	Belfast C B C		PI	Cork
	OJ	Birmingham C B C		PJ	Surrey		QJ	Foreign Visitors
	OK	Birmingham C B C		PK	Surrey		QK	Foreign Visitors
	OL	Birmingham C B C		PL	Surrey		QL	Foreign Visitors
	OM	Birmingham C B C		PM	East Sussex		QM	Foreign Visitors
	ON	Birmingham C B C		PN	East Sussex		QN	Foreign Visitors
	OO	Essex		PO	West Sussex
	OP	Birmingham C B C		PP	Buckinghamshire C C		QP	Foreign Visitors
							QQ	Foreign Visitors
	OR	Southampton (County)		PR	Dorset
	OS	Wigtown		PS	Zetland (Shetland)		QS	Foreign Visitors
	OT	Southampton (County)		PT	[County] Durham		QT	Foreign Visitors
	OU	Southampton (County)		PU	Essex
	OV	Birmingham C B C		PV	Ipswich
	OW	Southampton		PW	Norfolk
	OX	Birmingham C B C		PX	West Sussex		QX	Foreign Visitors
	OY	Croydon C B C		PY	Yorkshire North Riding		QY	Foreign Visitors
	OZ	Belfast C B C		PZ	Belfast C B C
	Mark	Authority		Mark	Authority		Mark	Authority
	RA	Derbyshire		SA	Aberdeen County		TA	Devon
	RB	Derbyshire		SB	Argyll		TB	Lancashire
	RC	Derby C B C		SC	Edinburgh		TC	Lancashire
	RD	Reading		SD	Ayrshire C C		TD	Lancashire
	RE	Staffordshire		SE	Banff		TE	Lancashire
	RF	Staffordshire		SF	Edinburgh		TF	Lancashire
	RG	Aberdeen B C		SG	Edinburgh		TG	Glamorganshire
	RH	[Kingston upon] Hull		SH	Berwick		TH	Carmarthenshire C C
	RI	Dublin		SI	Dublin C C		TI	Limerick (Borough)
	RJ	Salford		SJ	Bute C C		TJ	Lancashire
	RK	Croydon C B C		SK	Caithness C C		TK	Dorset
	RL	Cornwall C C		SL	Clackmannan		TL	Lincolnshire (Kesteven)
	RM	Cumberland C C		SM	Dumfries		TM	Bedfordshire
	RN	Preston		SN	Dunbarton		TN	Newcastle-upon-Tyne
	RO	Hertfordshire		SO	Moray		TO	Nottingham
	RP	Northamptonshire		SP	Fife		TP	Portsmouth
	RR	Nottinghamshire		SR	Angus C C		TR	Southampton
	RS	Aberdeen B C		SS	[East] Lothian		TS	Dundee
	RT	[East] Suffolk		ST	Inverness		TT	Devon
	RU	Bournemouth C B C		SU	Kincardine		TU	Cheshire C C
	RV	Portsmouth		SV	Kinross		TV	Nottingham
	RW	Coventry C B C		SW	Kirkcudbright		TW	Essex
	RX	Berkshire		SX	[West] Lothian		TX	Glamorganshire
	RY	Leicester		SY	Midlothian		TY	Northumberland
	RZ	Antrim		SZ	Down		TZ	Belfast C B C
	Mark	Authority		Mark	Authority		Mark	Authority
	UA	Leeds		VA	Lanark		WA	Sheffield
	UB	Leeds		VB	Croydon C B C		WB	Sheffield
	UC	London		VC	Coventry C B C		WC	Essex
	UD	Oxfordshire		VD	Lanark		WD	Warwickshire
	UE	Warwickshire		VE	Cambridgeshire C C		WE	Sheffield
	UF	Brighton C B C		VF	Norfolk		WF	Yorkshire East Riding
	UG	Leeds		VG	Norwich		WG	Stirling
	UH	Cardiff C B C		VH	Huddersfield		WH	Bolton C B C
	UI	Londonderry					WI	Waterford
	UJ	Shropshire		VJ	Herefordshire		WJ	Sheffield
	UK	Wolverhampton		VK	Newcastle-upon-Tyne		WK	Coventry C B C
	UL	London		VL	Lincoln		WL	Oxford C B C
	UM	Leeds		VM	Manchester		WM	Southport
	UN	Denbighshire C C		VN	Yorkshire North Riding		WN	Swansea
	UO	Devon		VO	Nottinghamshire		WO	Monmouthshire
	UP	[County] Durham		VP	Birmingham C B C		WP	Worcestershire
	UR	Hertfordshire		VR	Manchester		WR	Yorkshire West Riding
	US	Govan B C		VS	Greenock		WS	Leith
	US	Glasgow					WS	Edinburgh
	UT	Leicestershire C C		VT	Stoke-on-Trent		WT	Yorkshire West Riding
	UU	London		VU	Manchester		WU	Yorkshire West Riding
	UV	London		VV	Northampton		WV	Wiltshire
	UW	London		VW	Essex		WW	Yorkshire West Riding
	UX	Shropshire		VX	Essex		WX	Yorkshire West Riding
	UY	Worcestershire		VY	York		WY	Yorkshire West Riding
	UZ	Belfast C B C		VZ	Tyrone		WZ	Belfast C B C
	Mark	Authority		Mark	Authority		Mark	Authority
	XA	London		YA	Somerset		ZA	Dublin
	XB	London		YB	Somerset		ZB	Cork
	XC	London		YC	Somerset		ZC	Dublin
	XD	London		YD	Somerset		ZD	Dublin
	XE	London		YE	London		ZE	Dublin
	XF	London		YF	London		ZF	Cork
	XG	Middlesbrough		YG	Yorkshire West Riding		ZG	Dublin CC
	XH	London		YH	London		ZH	Dublin
	XI	Belfast C B C		YI	Dublin		ZI	Dublin
	XJ	Manchester		YJ	Dundee		ZJ	Dublin
	XK	London		YK	London		ZK	Cork
	XL	London		YL	London		ZL	Dublin
	XM	London		YM	London		ZM	Galway
	XN	London		YN	London		ZN	Meath
	XO	London		YO	London		ZO	Dublin
	XP	London		YP	London		ZP	[County] Donegal
	XR	London		YR	London		ZR	Wexford
				YS	Glasgow		ZS	Dublin CC
	XS	Paisley		YS	Partick B C
	XT	London		YT	London		ZT	Cork
	XU	London		YU	London		ZU	Dublin
	XV	London		YV	London		ZV	Re registrations
	XW	London		YW	London		ZW	Kildare
	XX	London		YX	London		ZX	[County] Kerry
	XY	London		YY	London		ZY	Louth
	XZ	Armagh C C		YZ	Londonderry		ZZ	Royal Irish A C