What is the relationship between IG Group and London in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

(DI), Venn Life Sciences Holdings INTERIM DIVIDEND PAYMENT DATE London Stock Exchange Group INTERNATIONAL ECONOMIC ANNOUNCEMENTS Consumer Confidence Indicator (EU) (10:00) House Price Index (US) (15:00) GMS (Taiwan OTC: 6481.TWO - news ) AFH Financial Group FINALS Clinigen Group (Stuttgart: 78C.SG - news ) , Close Brothers Group, Regenersis (LSE: RGS.L - news ) , Swallowfield EGMS Societatea Nationala De Gaze Naturale Romgaz S.A. GDR (Reg S) AGMS Cohort (LSE: CHRT.L - news ) , HML Holdings (LSE: HMLH.L - news ) , Impact Holdings, SPARK Ventures (LSE: SPK.L - news ) , Utilico Emerging Markets Ltd (DI), Velox3 (LSE: VLOX.L - news ) TRADING ANNOUNCEMENTS Dairy Crest Group, IG Group Holdings UK ECONOMIC ANNOUNCEMENTS CBI Industrial Trends Surveys (11:00) Public Sector Finances (09:30) FINAL DIVIDEND PAYMENT DATE Northgate Wednesday 23 September INTERIMS EG Solutions (LSE: EGS.L - news ) , Gresham House (LSE: GHE.L - news ) , Highland Gold Mining Ltd (Other OTC: HGHGF - news ) ., JQW (LSE: JQW.L - news ) , NAHL Group (LSE: NAH.L - news ) , Styles & Wood Group INTERNATIONAL ECONOMIC ANNOUNCEMENTS Crude Oil Inventories (US) (15:30) MBA Mortgage Applications (US) (12:00) FINALS Hansard Global (Other OTC: HNRDF - news ) , Smiths Group (Other OTC: SMGKF - news ) AGMS Alcentra Euorpean Floating Rate Income Fund Ltd Red Ord Shs, Arricano Real Estate (LSE: ARO.L - news ) (DI), Avarae Global Coins (LSE: AVR.L - news ) , Begbies Traynor Group, Best of the Best (LSE: BEST.L - news ) , Diageo (LSE: DGE.L - news ) , Eckoh (LSE: ECK.L - news ) , First Property Group, Imaginatik (LSE: IMTK.L - news ) , Real Good Food (LSE: RGD.L - news ) , Scientific Digital Imaging (LSE: SDI.L - news ) , Twentyfour Income Fund Limited Ord Red TRADING ANNOUNCEMENTS United Utilities Group UK ECONOMIC ANNOUNCEMENTS BBA Mortgage Lending Figures (09:30) FINAL DIVIDEND PAYMENT DATE Bloomsbury Publishing (LSE: BMY.L - news ) Thursday 24 September INTERIMS 32Red, Air Partner (LSE: AIP.L - news ) , BrainJuicer Group (LSE: BJU.L - news ) , Dolphin Capital Investors Ltd, Good Energy Group, Mission Marketing Group, Mortgage Advice Bureau (Holdings) , Science In Sport (LSE: SIS.L - news ) , Scisys INTERIM DIVIDEND PAYMENT DATE Low & Bonar (LSE: LWB.L - news ) , Merlin Entertainments (LSE: MERL.L - news ) , Prudential (HKSE: 2378.HK - news ) , Quartix Holdings (Other OTC: QRTXF - news ) , Rexam (LSE: REX.L - news ) , Schroders (LSE: SDR.L - news ) , Schroders (Non-Voting), Wood Group (John) INTERIM EX-DIVIDEND DATE Aquatic Foods Group , Bovis Homes Group, Christie Group (LSE: CTG.L - news ) , Crest Nicholson Holdings, Dignity (Other OTC: DGNTY - news ) , Drax Group (LSE: DRX.L - news ) , EMIS Group (LSE: EMIS.L - news ) , Epwin Group (LSE: EPWN.L - news ) , Essentra (Other OTC: FLRAF - news ) , Gamma Communications (LSE: GAMA.L - news ) , Green Reit (Other OTC: GREEF - news ) , Henry Boot (LSE: BHY.L - news ) , Ladbrokes (LSE: LAD.L - news ) , Lighthouse Group (LSE: LGT.L - news ) , M. P. Evans Group, Old Mutual (Other OTC: ODMTY - news ) , Pendragon (LSE: PDG.L - news ) , Playtech (LSE: PTEC.L - news ) , Premier Farnell (LSE: PFL.L - news ) , Quarto Group Inc (LSE: QRT.L - news ) ., Real Estate Investors, SafeCharge International Group Limited (DI), Servelec Group (LSE: SERV.L - news ) , Stadium Group (LSE: SDM.L - news ) , Vitec Group (Other OTC: VTEPF - news ) , Wynnstay Group (LSE: WYN.L - news ) QUARTERLY PAYMENT DATE Fair Oaks Income Fund Limited INTERNATIONAL ECONOMIC ANNOUNCEMENTS Continuing Claims (US) (13:30) Durable Goods Orders (US) (13:30) GFK Consumer Confidence (GER) (07:00) IFO Business Climate (GER) (09:00) IFO Business Climate (GER) (09:30) IFO Current Assessment (GER) (09:00) IFO Current Assessment (GER) (09:30) IFO Expectations (GER) (09:30) IFO Expectations (GER) (09:00) Initial Jobless Claims (US) (13:30) New Homes Sales (US) (15:00) GMS VPC Specialty Lending Investments AGMS Aortech International (LSE: AOR.L - news ) , Braveheart Investment Group, Conviviality Retail (LSE: CVR.L - news ) , Fiske (LSE: FKE.L - news ) , Micro Focus International (Other OTC: MCFUF - news ) , NWF Group (LSE: NWF.L - news ) , Park Group (LSE: PKG.L - news ) , Pembroke Vct (LSE: PEMB.L - news ) , Pembroke Vct B, Phoenix IT Group (LSE: 5282.L - news ) , ReNeuron Group (LSE: RENE.L - news ) , Ryanair Holdings (Xetra: RY4B.DE - news ) , TP5 VCT, Tungsten Corporation (Other OTC: TGTNF - news ) , Vectura Group (LSE: VEC.L - news ) , Versarien TRADING ANNOUNCEMENTS Euromoney Institutional Investor FINAL EX-DIVIDEND DATE Avarae Global Coins, Best of the Best, Brooks Macdonald Group, Consort Medical (Other OTC: CSRMF - news ) , Diverse Income Trust (The), Hargreaves Services (Other OTC: HGRVF - news ) , Kier Group (LSE: KIE.L - news ) , Norish Units, Oxford Instruments (Other OTC: OXGGY - news ) , Redrow (LSE: RDW.L - news ) , TP5 VCT, TP5 VCT 'B' Shares (Berlin: DI6.BE - news ) Friday September 25 INTERIM DIVIDEND PAYMENT DATE Acacia Mining (LSE: ABG.L - news ) , Capital & Counties Properties (LSE: CAPC.L - news ) , Chemring Group (Other OTC: CMGMF - news ) , Clarkson (LSE: CKN.L - news ) , FDM Group (Holdings), Foresight VCT Planned Exit Shares, Foxtons Group (LSE: FOXT.L - news ) , Henderson Opportunities Trust, Hikma Pharmaceuticals (LSE: HIK.L - news ) , Kingspan Group (LSE: KGP.L - news ) , Lancashire Holdings Limited (Other OTC: LCSHF - news ) , Marshall Motor Holdings, Maven Income & Growth 4 VCT, Mincon Group (LSE: MCON.L - news ) , Mobeus Income & Growth 4 Vct, National Express Group, Paddy Power (LSE: PAP.L - news ) , Polymetal International (Other OTC: AUCOY - news ) , Polypipe Group (LSE: PLP.L - news ) , Reckitt Benckiser Group, Rotork (LSE: ROR.L - news ) , Stock Spirits Group , Ultra Electronics Holdings, Vesuvius QUARTERLY PAYMENT DATE Alpha Real Trust Ltd., Duet Real Estate Finance Ltd INTERNATIONAL ECONOMIC ANNOUNCEMENTS GDP (Final) (US) (13:30) M3 Money Supply (EU) (09:00) FINALS Asian Citrus Holding, CVS Group (LSE: CVSG.L - news ) ANNUAL REPORT Hargreaves Lansdown (LSE: HL.L - news ) SPECIAL DIVIDEND PAYMENT DATE Fletcher King (LSE: FLK.L - news ) , Foxtons Group EGMS OAO Novatek GDR (Reg S) AGMS Empyrean Energy (LSE: EME.L - news ) , Invesco Perpetual Select Trust Balanced Risk Shares, Invesco Perpetual Select Trust Glbl Eqty Inc Shs, Invesco Perpetual Select Trust Managed Liquidity Shares, Invesco Perpetual Select Trust UK Equity Shares, Penna Consulting (LSE: PNA.L - news ) , Sirius Minerals (Other OTC: SRUXF - news ) , Vela Technologies (LSE: VELA.L - news ) , Victoria FINAL DIVIDEND PAYMENT DATE Dixons Carphone (Other OTC: DSITF - news ) , Fletcher King, NCC Group (LSE: NCC.L - news ) , Safeland (LSE: SAF.L - news )

Answer: headquarters_location