Have you ever wondered what happened to your National Power holding? Or how you came to be the proud owner of shares in Mitchells & Butler when you had never bought any? Dont worry your Broker probably doesnt know either.

Answer: Go out and buy Tolley's Capital Gains Tax 2008-09: Main Annual. Or hopefully the answer is below in Share Worlds ever-expanding list of past corporate activity.

Asda > Wal-Mart

AXA > Sun Life & Provincial Holdings > Guardian Royal Exchange

Bank of Scotland & Halifax > HBOS

Bass > Six Continents > Inter-continental Hotels + Mitchells & Butlers

BG Plc > BG Group + Lattice

Big Food Group < Iceland

Booker > (Cash from Iceland)

Bioprojects > Original Investments > Vialogy

British Gas > BG Plc + Centrica

Cube8 > Room Service > Azure Holdings > ValiRx PLc

CFA > Dowgate Capital

Chaco Resources < Gold Mines of Sardinia

Chubb & Son>Racal> Chubb Security > Williams Holdings

Coliseum Group > Sports Café Holdings

DX services < Hays

Energis > Cable & Wireless

Equity Consort Investment Trust > Equity Consort Ltd. > Cash

Experian < GUS

FirstAfrica Oil < Financial Develoment Corporation < Hansard Group

Flintstone > Proventec

Genesis Petroleum Corp < Zari Resources

Gold Mines of Sardinia > Chaco Resources + Medoro Resources

Grasshopper Investments > Goindustry

GUS > Home Retail Group + Experian

Halifax < HBOS

Hansard Group < Financial Develoment Corporation < FirstAfrica Oil

Hays > Hays + DX Services

HBOS < Bank of Scotland + Halifax

Home Retail Group < GUS

Homebase < Sainsbury

Homebase > GUS > Home Retail Group

Iceland > Big Food Group > (Cash Bid)

Innogy > RWEInnogy

Intercontinental Hotels < Six Continents < Bass

International Power < National Power

Just Group > Newscreen Media Group > Think Group (Liquidation)

Kingfisher > Kingfisher + Woolworths Group

Lattice > National Grid Transco

Management Consulting Group < Proudfoot

Matrix Communication > Fujin Technology > Xploite PLC

Media@Invest > Universal Direct

Medoro Resources < Gold Mines of Sardinia

Mitchells & Butlers < Six Continents < Bass

Metrocapital > Braemar Group

MV Sports > Tandem Group

National Grid Group > National Grid Transco > National Grid plc/`B` Shares or Cash

National Power > International Power + Innogy(RWEInnogy)

National Westminster Bank > Royal Bank of Scotland

North Western Electricity Board > Norweb Plc > North West Water > Norweb Distribution > United Utilities

Northern Ireland Electricity > Viridian

Oystertec > Advanced Fluid Connextions

Pharmagene > Asterand

Powergen > Cash

Proudfoot > Management Consulting Group

Safeway > Wm Morrisons

Scoot.com > Timeload > Coe Group

Seeboard > CSW > LE Group

Scottish Hydro Electric + Southern Electric > Scottish & Southern Energy

Shell Transport and Trading Company > Royal Dutch Shell

Six Continents > Intercontinental Hotels + Mitchells & Butlers

South of Scotland Electricity Board > ScottishPower Plc

Southern Electric + Scottish Hydro Electric > Scottish & Southern Energy

South Wales Electricity plc > Welsh Water > Hyder > Infralec > Western Power Distribution

South Western Electricity plc > Southern Electric International > PPL Global Inc > Western Power Distribution

Talisman House > Seymour Pierce > Investment Management Holdings (IMH)

TI Group > Smiths Industries > TI Automotive

Viridian < Northern Ireland Electricity

WEST 175 > HIGHTEX

Wigmore Group > Speymill Group

Woolworths Group < Kingfisher

Yorkshire Electricity Group plc > AEP/PS Colorado > CSW > Innogy

Zari Resources > Genesis Petroleum Corp