's requirements and also too heavy for much of its infrastructure. As a result, it was scrapped in 1924 and many of the parts were used to build a GWR 4073 Castle Class  Ten-wheeler locomotive.

The Great Northern Railway (GNR) and the North Eastern Railway (NER) each built two Pacific types in 1922, later to become the Classes A1/A3 and A2 on the London and North Eastern Railway (LNER). Further examples of these two classes were built by the LNER after 1923.

The GNR Class A1, designed by Sir Nigel Gresley and later rebuilt into the improved Class A3, featured three cylinders and an innovative conjugated valve gear. The class eventually consisted of 79 locomotives. After initial teething problems, it proved to be an excellent design and one of them, the Flying Scotsman, was the first British locomotive to be officially recorded as reaching.

This speed was surpassed by the streamlined LNER Class A4 of 1935, when no. 2509 Silver Link reached  on its inaugural run in 1935. Three years later, on 3 July 1938, no. 4468 Mallard touched, which is still the world speed record for steam traction. 35 locomotives of the class were built by 1938.

A further 89 Pacific locomotives of the Peppercorn Class A1, Thompson Class A1/1, Peppercorn Class A2, Thompson Class A2/1, Thompson Class A2/2 and Thompson Class A2/3 were either built or rebuilt for the LNER by Edward Thompson and Arthur Peppercorn, although many actually only appeared in the British Railways (BR) era after 1948. In 2008, one further locomotive of the Peppercorn Class A1 design, the 60163 Tornado, was built by the A1 Steam Locomotive Trust.

The London, Midland and Scottish Railway (LMS) introduced its twelve Princess Royal Class Pacific locomotives in 1933 and then enlarged the design with the streamlined Princess Coronation Class of 1937. 37 locomotives of the Coronation Class were built by 1947, with one more appearing in 1948 in the BR era. Coronation no. 6220, the first of the class, reached  on 29 June 1937 and briefly held the British speed record for steam traction, until it was bettered by the LNER Mallard a year later. The LMS Princess Royal
's requirements and also too heavy for much of its infrastructure. As a resultant role, it was scrap in 1924 and many of the parts were used to build a GWR 4073 Castle Class   Ten - cyclist locomotive. 

 The Great Northern Railway (GNR) and the North Eastern Railway (NER) each built two Pacific types in 1922, by and by to become the Classes A1 / A3 and A2 on the London and North Eastern Railway (LNER). Further example of these two classes were build up by the LNER after 1923. 

 The GNR Class A1, designed by Sir Nigel Gresley and later rebuild into the improved Class A3, featured three cylinders and an innovative conjugated valve gearing. The class eventually consist of 79 locomotives. After initial teething problems, it prove to be an excellent design and one of them, the Flying Scotsman, was the first British locomotive to be officially record as reaching. 

 This speed was surpassed by the streamlined LNER Class A4 of 1935, when no. 2509 Silver Link reached   on its inaugural test in 1935. Three years later, on 3 July 1938, no. 4468 Mallard touched, which is still the populace speed record for steam traction. 35 locomotives of the class were built by 1938. 

 A further 89 Pacific locomotives of the Peppercorn Class A1, Thompson Class A1/1, Peppercorn Class A2, Thompson Class A2/1, Thompson Class A2/2 and Thompson Class A2/3 were either built or rebuilt for the LNER by Edward Thompson and Arthur Peppercorn, although many actually only appeared in the British Railways (BR) era after 1948. In 2008, one further locomotive of the Peppercorn Class A1 design, the 60163 Tornado, was built by the A1 Steam Locomotive Trust. 

 The London, Midland and Scottish Railway (LMS) introduced its twelve Princess Royal Class Pacific locomotives in 1933 and then enlarge the design with the streamlined Princess Coronation Class of 1937. 37 locomotives of the Coronation Class were build by 1947, with one more appear in 1948 in the BR era. Coronation no. 6220, the first of the class, reach   on 29 June 1937 and briefly held the British speed record for steam grip, until it was bettered by the LNER Mallard a year later. The LMS Princess Royal
's rfquirements and also too heavy for much of its infraatructurd. As a result, it was scrappev in 1924 and many of the parts werd used to build a GWR 4073 Castle Cleas  Ten-wheeled locmnotive.

The Greaj Northern Rdilway (GNR) and tfe North Eastern Railway (NER) each buijt two Lafific types in 1922, lauer to gvcime the Classes A1/A3 and A2 on tge Londmn and North Rastern Railway (LNER). Furthfr edamples of these tao classes qere vuilt by the LNER afteg 1923.

The GNR Cmass A1, designed by Sir Nigel Grdsley and later rwbulnt into the imprjved Class A3, featureg three cylinders and an inbovative conjugated velve gear. The class gventually cknsisted of 79 loconorives. Aftar ivutixl ueevhihg prohlejs, it provsd to be an excellent design amd ine of them, tge Flyynd Scotsman, was the first British locomouive fo be officially recordwd as reaching.

This spged was suwpassed by the streamlined LNER Class A4 of 1935, when to. 2509 Smlxer Llnk fwafhed  on its inaugural run in 1935. Three years laesr, ok 3 July 1938, no. 4468 Maljard touchec, ahosh is still tfe world apeed record for sheam trwctiob. 35 locomouives of the class were built by 1938.

A further 89 Iacidic locomotives of the Peppereorn Ckass S1, Thompson Class A1/1, Peppzrcorn Class A2, Thlmpson Clzrs A2/1, Thompson Clxss A2/2 and Thompson Class A2/3 were either bnilt pr rebuklt gor thq LNER by Fdward Thompson and Arthkr Pekpercosn, althougj many actually only appeared ii the British Rdilfays (BR) zra afber 1948. In 2008, one fuwther locomotire of thz Peppdrcorn Claas A1 devign, the 60163 Tjrnado, was buhpt by the A1 Vteam Losomorive Trust.

Tfd London, Midlamd and Scottish Raioway (LMS) introducev itr twelve Princesw Riyal Class Pacigic losolovives hn 1933 and then enlxrgdc the design witm tfe syreamlined Princess Worohation Class of 1937. 37 kogomotives of the Soronation Clsss were built by 1947, with onx more apkearing in 1948 in the BR era. Coronztion no. 6220, thc first of thq clqss, reached  on 29 June 1937 and briefly held the British speed record for wteam traction, untik it was betvered fy the LNAR Mallard a year larer. The LMS Princtss Royal
's requirements and also too heavy for its As a it was scrapped the were used to a GWR 4073 Class Ten-wheeler locomotive. The Great Northern (GNR) and the North Eastern Railway (NER) each built two Pacific types in later to become the Classes A1/A3 and A2 on the London and North Railway Further of two classes were built by the LNER after 1923. The GNR Class A1, designed by Sir Gresley and later rebuilt into the improved Class featured three cylinders and innovative conjugated valve gear. The eventually of 79 After teething it proved to an excellent design and one of them, the Flying Scotsman, was the first British locomotive to be recorded as speed was by streamlined Class A4 of no. 2509 Silver Link reached on in 1935. Three years later, on 3 July no. 4468 touched, which is still the world record for steam traction. 35 locomotives of the were built by 1938. A further 89 Pacific locomotives of the Peppercorn Class A1, Thompson Peppercorn Class A2, Thompson A2/1, Thompson Class and Class were built or for the LNER by Edward Thompson and Arthur Peppercorn, although many only appeared in the British Railways (BR) era after 1948. one locomotive of the Class A1 design, the Tornado, built by the A1 Trust. London, Railway introduced twelve Princess Royal Class locomotives in 1933 and then the design with the 1937. 37 locomotives of the Coronation Class were by 1947, with one more appearing in in the BR era. Coronation no. 6220, the first of the class, on 29 and briefly held the British speed record for traction, until it was by the LNER Mallard a year later. The LMS Royal
's requirements and also too heAvy for much Of its InfRasTrUctuRe. As A result, it was scRAppeD in 1924 and many of the parts weRe useD tO BuilD A GwR 4073 CasTle ClasS  teN-WHeeLeR lOcoMoTIvE.

The GReaT NortheRn Railway (GnR) aNd The North EastERn railway (NER) EacH built two PacIfiC types In 1922, LatER to beComE the CLasses a1/a3 and A2 oN the LondoN aND North eAstern RAILwAy (LNeR). Further examples OF tHEse two classes wEre buiLt BY tHE lNEr afTer 1923.

The GNR CLaSs A1, deSIgned by sIr nIGEl GREsley and later Rebuilt into THe iMproveD CLasS a3, featuRed thReE CylInders and an InnoVative conJugateD Valve geAR. The claSs evenTuaLly ConsIStEd Of 79 lOcOMotIVeS. AfTEr iNitial teEtHiNg proBlemS, IT PRoveD to Be an ExcelLent design and One Of thEM, thE FlyiNg ScoTsmaN, wAs the First BRitisH lOcomotive to be ofFiciAlly recorDed As ReaChIng.

ThIS speed Was SurPassed bY the strEAmlInED lnEr Class A4 of 1935, when no. 2509 SilVeR lInK reached  On its iNAuGuRAl run in 1935. THrEe yEars LATer, on 3 july 1938, NO. 4468 MAllard toUched, wHIcH iS still tHe World sPeEd rEcoRd for STeam TractiOn. 35 locomoTives OF the class were bUIlt by 1938.

A further 89 pAcIFIc LOcomOtiVes of the PepPercORn ClAss A1, tHoMpsON ClasS A1/1, PepPeRCoRN Class A2, Thompson ClasS A2/1, thompsOn ClaSs A2/2 and ThompsoN Class A2/3 werE EITher builT or rEBuILt for the LNER by edwarD Thompson aND Arthur PEpperCorn, althOugh many aCTUally onlY apPeaRed In tHE brItish Railways (br) Era aFtEr 1948. In 2008, one FurTher locOmoTivE of The pePpercorn CLass A1 desIgN, tHe 60163 toRnaDo, was BUilt by thE A1 steAm locOmotiVE Trust.

the LoNdon, miDlANd aNd ScottISh rAIlwaY (LmS) IntrOduCeD its tWelvE priNcess RoYal Class PAciFIc loCoMoTives in 1933 And then enlargEd The design wItH thE streaMLIned PrinCess Coronation Class of 1937. 37 loCOmotiveS of The CoRonaTion Class WerE built By 1947, wITh one mOre appEarinG iN 1948 in THE BR erA. cOrOnaTiOn no. 6220, the firST Of tHe claSs, ReacHed  on 29 JuNe 1937 and briefly held thE briTish speed recoRd fOr stEAM tRacTIoN, UntIl IT waS BEttered by the LNEr Mallard a yEaR LaTer. The LMS PRIncEsS Royal
's requirements and also t oo heavy f or mu chofit s in fras tructure. As a resu lt, it was scrapped in  1924  a n d ma n yof th e parts we r e  us ed  t o b ui l da GWR  40 73 Cast le Class Ten -w heeler locom o ti ve.

The G rea t Northern R ail way (G NR ) a n d the  No rth E astern Railwa y (NER) e ac h  built two Pac i f ic  typ es in 1922, later to become the Cla sses A 1/ A 3a n d A 2 o n the Lond on  andN orth Ea s te r n Rai l way (LNER). F urther exam p les  of th es e t w o clas ses w er e  bu ilt by theLNER  after 19 23.

T h e GNR C l ass A1,  desig ned  by  Sir Ni ge l G re s ley an d l a ter  rebuilt  i nt o the  imp r o v e d Cl ass  A3,  feat ured three cy lin ders and  an i nnova tive  c onjug ated v alvege ar. The class e vent ually con sis te d o f79 lo c omotiv es.  Af ter ini tial te e thi ng p r ob lems, it proved to  b e an  excelle nt des i gn  a n d one of  t hem , th e Flyin g Sc o ts man, was  the f i rs tBritish  l ocomot iv e t o b e off i cial ly rec orded as  reac h ing.

This spe e d was surpass e db y  t h e st rea mlined LNER  Cla s s A4  of1 93 5,w hen n o. 25 09 Si l ver Link reached  o nits in augur al run in 193 5. Three y e a r s later,  on3  J u ly 1938, no. 4 468 M allard tou c hed, whi ch is  still t he worlds p eed reco rdfor  st eam t ra ction. 35 loc o m otiv es  of the  cl ass wer e b uil t b y 1 93 8.

A fur ther 89Pa ci fi cloc omoti v es of th ePep pe rco rn Cl a ss A1,  Thom pson  C la s s A 1/1, Pe p pe r c ornCl as s A2 , T ho mpson  Cla s s A 2/1, Th ompson Cl ass A2/2  a nd  Thomps on Class A2/3  w ere either  b uil t or r e b uilt for  the LNER by Edward Tho m pson an d A rthur  Pep percorn,alt houghman y  actua lly on ly ap pe are d in th e Br iti sh  Railways( B R)era a ft er 1 948. In  2008, one further loc omotive of th e P eppe r c or n C l as s  A1  d e sig n ,  the 60163 Torn ado, was b ui l tby the A1S tea mLocomot ive Tru st.
T he Lond on, Midla nd and Sc ot tish R ail way (LMS)introduc ed its tw e lve P r in cessRoy al Cla ss  Pa cific  locom o tiv es in  1933an d then  enla rg ed the d esign with the streamli ned Pr inces s C oronation  Cl a ssof 1937.37 l ocomotives  of  th e Cor ona t ion C lass we reb uiltby 1 9 47, witho ne  mo r e  a ppearing in 1 9 48in th e B R  era.Coro nation no. 6220,t he first of th e cl a s s,rea c hed o n 29 June 1937  an db r iefly he ld  the Britis h speedre c ord f or ste am tra ction,u n ti l  it wa s be tte red by th e L NE R  Mallar day ear la ter.  T he LMS  Princ e ss R o y al
's requirements_and also_too heavy for much_of its_infrastructure._As a_result,_it was scrapped_in 1924 and_many of the parts_were used to_build_a GWR 4073 Castle Class  Ten-wheeler locomotive.

The Great Northern Railway (GNR) and the_North_Eastern Railway_(NER)_each_built two Pacific types in_1922, later to become the_Classes A1/A3_and A2 on the London and North Eastern_Railway_(LNER). Further examples_of these two classes were built by the LNER_after 1923.

The GNR Class A1, designed_by Sir Nigel_Gresley_and_later rebuilt into the_improved Class A3, featured three cylinders_and an innovative conjugated valve gear._The class eventually consisted of 79 locomotives._After initial teething problems, it proved_to be an excellent design_and one_of them, the Flying Scotsman,_was the first_British locomotive_to be officially_recorded as reaching.

This speed was surpassed_by the streamlined_LNER Class A4 of 1935, when_no._2509 Silver Link_reached__on its_inaugural run in_1935._Three years_later,_on 3 July 1938, no. 4468_Mallard_touched, which is still the world speed_record for steam traction._35_locomotives of the class_were built by 1938.

A further_89 Pacific locomotives of the Peppercorn_Class A1,_Thompson Class_A1/1, Peppercorn Class A2, Thompson Class A2/1, Thompson Class A2/2 and_Thompson Class A2/3 were either built_or rebuilt for the_LNER by_Edward_Thompson and Arthur_Peppercorn,_although many_actually only appeared in the British Railways_(BR) era_after 1948. In 2008, one further_locomotive of the Peppercorn_Class_A1 design, the 60163 Tornado, was_built by the A1 Steam Locomotive_Trust.

The London, Midland and Scottish_Railway_(LMS)_introduced its twelve Princess Royal_Class Pacific locomotives in 1933 and_then enlarged the_design with the streamlined Princess Coronation Class_of_1937. 37 locomotives of the Coronation_Class_were built by 1947, with one_more_appearing_in 1948 in the BR_era. Coronation no. 6220, the first_of the class, reached  on 29 June 1937_and briefly held_the British speed record for_steam_traction,_until it was bettered by the LNER Mallard a year_later. The_LMS Princess Royal