Reports

The English legal system has been producing law reports since time immemorial, and the Scots for even longer. These pages are full of codes making reference to such series, with their wonderful array of abbreviations. You cannot enquire about the law without beginning at least to understand and use them.
Here is a brief, but growing, guide.
Neutral Citations:
Neutral citations work, more or less by identifying the year, the court and the sequential number of the hearing. The neutral citation is now the preferred form where available.

Abbreviation Alternate Title Example Publisher
AC Law Reports, Appeal Cases (Third Series) [2014] 1 AC 1401
ACD Administrative Court Digest Sweet and Maxwell
AlI ER (D) All England (Digest) [2003] AlI ER (D) 340
All ER AER All England Law Reports [2008] 2 All ER 44
All ER (Comm) All England (Commercial) [2003] 2 All ER (Comm) 276
BCC British Company Cases [2002] BCC 256 Sweet and Maxwell
BCLC Butterworths Company Law Cases [2002] 1 BCLC 65 Butterworth / Tolley
BHRC Butterworths Human Rights Cases 14 BHRC 626
BLGR British Local Government Reports [2008] BLGR 37
BLR Business Law Revw or Building Law Reports [2012] BLR 546
BMLR Butterworths Medico-Legal Reports (2009) 108 BMLR 1
BPIR Bankruptcy and Personal Insolvency Reports [1996] BPIR 339
BTC British Tax Cases [2001] BTC 292 CCH
Bus LR Business Law Review
Bus LRD Business Law Review Digest [2014] Bus LR D9
CCL Rep Community Care Law Reports (2001) 4 CCL Rep 398 Legal Action Group
CILL Construction Industry Law Letter [2006] CILL 2343
CLC Commercial Law Cases [2007] 2 CLC 748 Sweet and Maxwell
CN Tottel's Construction Newsletter [2014] CN 1019 Tottel
COD Crown Office Digest Sweet and Maxwell
Comp AR Competition Appeal Reports [2016] Comp AR 33
Con LR Construction Law Reports 184 Con LR 145
Costs LR Costs Law Reports [2014] 2 Costs LR 266
CP Rep Civil Procedure Reports
Cr App Rep Cr App R Criminal Appeal Reports [2000] 1 Cr App Rep 360
Cr App Rep (S) Cr App R (S) Criminal Appeal Reports Sentencing [2000] 1 Cr App Rep (S) 497
CTLC
Consumer & Trading Law Cases
ECC European Commercial Cases [2012] ECC 15
ECDR Blair Co.L.R European Copyright and Design Reports [2008] ECDR 9
EG Estates Gazette [2001] 45 EG 142
EGCS Estates Gazette Case Summaries [2001] 11 EGCS 172
EGLR Estates Gazette Law Reports [2001] 3 EGLR 6
El and Bl (1857) 7 El and Bl 885
EMLR Entertainment and Media Law Reports [2002] EMLR 839 Sweet and Maxwell
Emp LR Employment Lawyer Reports [2001] Emp LR 784 Sweet and Maxwell
EngR English Reports [1857] EngR 617
Eu LR European Law Reports [2010] Eu LR 136
EWCA Court of Appeal (England and Wales) [2014] EWCA Civ 132
Extradition LR Extradition Law Reports [2007] Extradition LR 195
Fam Law Fam Family Law [2014] Fam Law 943
FCR Family Court Reporter [2014] 2 FCR 231 Tolleys
FLR Family Law Review [2007] 2 FLR 759
FSR Fleet Street Reports [2013] FSR 35
FTTTx FTT First Tier Tribunal (Tax) [2014] UKFTT 342 (TC) Bailii
HRLR Human Rights Law Reports [2007] HRLR 6
ICR Industrial Court Reports [2014] ICR 713
IL Pr International Litigation Procedure [2001] IL Pr 43
Info TLR InfoTLR Information Technology Law Reports [2011] Info TLR 75
Inquest LR Inquest Law Reports [2016] Inquest LR 47
IRLR Industrial Relations Law Report [2008] IRLR 70 Lexis Nexis
ITELR International Trust and Estate Law Reports 13 ITELR 391
JPL Journal of Planning Law [2008] JPL 519
KIR Knight's Industrial Reports (1974) 16 KIR 158
L and TR Landlord and Tenant Reports [2019] L and TR 13
LGR GLGR, LGLR, LGL Rep Local Government Reports, Butterworths Local Government Reports [1957] 55 LGR 595
Lloyd's Rep IR Lloyds Report - Insurance Reports [2008] Lloyd's Rep IR 413
Med LR Medical Law Reports [2012] Med LR 123
MHLR Mental Health Law Reports [2012] MHLR 94
NI Northern Ireland [2014] NI 315 Northern Ireland
NPC New Property Cases [2001] NPC 48
OPLR Occupational Pensions Law Reports [2003] OPLR 343
P and CR P and CR Planing and Compensation Reports [2009] 2 P and CR 16
Pens LR Pensions Law reports [2002] Pens LR 277, IDS
PIQR Personal Injuries and Quantum Reports [2014] PIQR P17, [1998] PIQR 324
PNLR Professional Negligence and Liability Reports [1996] PNLR 91
Po LR Police Law Reports [2006] Po LR 28 Southside Legal Publishing
PTSR Public and Third Sector Reports [2012] PTSR 633
QB Queens Bench [2015] 1 QB 107
RPC Reports of Patent, Design and Trade Mark Cases
RVR Rating and Valuation Reporter [2009] RVR 137
SJLB Solicitors' Journal LawBrief (2007) 151 SJLB 676
SLT Scottish Law Times
STC Simons Tax Cases [2001] STC 1065 Butterworths
STI Simon's Weekly Tax Intelligence [2008] STI 186
TC Tax Cases
TCLR Technology and Construction Law Reports [2019] TCLR 3
TLR Times Law Reports [1952] 2 TLR 809
UKCLR UK Competition Law Reports [2009] UKCLR 657
UKHRR UK Human Rights Reports [2007] UKHRR 621
UKSC UK Supreme Court [2014] UKSC 29 UK Supreme Court
WLR Weekly Law Reports [1994] 1 WLR 917
WLR(D) WLRD Weekly Law Reporst (Digest) [2014] WLR(D) 218
WTLR Wills and Trusts Law Reports [2002] WTLR 769 Legalease

See Also:  http://www.legalabbrevs.cardiff.ac.uk/ –  the (excellent) Cardiff Index to Legal Abbreviations