<Table> <Tr> <Th> Actor / Actress </Th> <Th> Region </Th> <Th> Role ( s ) </Th> </Tr> <Tr> <Td> Joseph May </Td> <Td> US </Td> <Td> Thomas ( `` The Adventure Begins '' onwards ) </Td> </Tr> <Tr> <Td> John Hasler </Td> <Td> UK </Td> </Tr> <Tr> <Td> UK / US </Td> <Td> Rheneas ( series 20 onwards ) </Td> </Tr> <Tr> <Td> David Bedella </Td> <Td> Victor , Carlos , The Mayor of Sodor and the Cuban man </Td> </Tr> <Tr> <Td> Jamie Campbell Bower </Td> <Td> Skiff </Td> </Tr> <Tr> <Td> Jonathan Broadbent </Td> <Td> Bill , Ben and The First Slip Coach </Td> </Tr> <Tr> <Td> Nathan Clarke </Td> <Td> Alfie </Td> </Tr> <Tr> <Td> Olivia Colman </Td> <Td> Marion </Td> </Tr> <Tr> <Td> Jules de Jongh </Td> <Td> US </Td> <Td> Emily , Lady Hatt ( Season 13 , `` Day of the Diesels '' , and Season 15 ) , the Duchess of Boxford , Stephen Hatt ( `` Diesel 's Special Delivery '' ) , Bridget Hatt , Bridget Hatt 's friends , Mavis ( Season 13 -- 16 ) , the teacher , the laundry lady , some children , small little boy , the ginger - haired boy ( `` Diesel 's Special Delivery '' , `` Emily and Dash '' , `` Percy the Snowman '' , `` Emily 's Winter Party Special '' and `` Pouty James '' ) , little girl in the red dress , the blond - haired boy ( Season 15 -- 18 ) , the blond - haired girl , and the school children </Td> </Tr> <Tr> <Td> UK / US </Td> <Td> Emily ( `` 4 - D Bubbling Boilers '' only ) and Alicia Botti </Td> </Tr> <Tr> <Td> Jonathan Forbes </Td> <Td> Connor </Td> </Tr> <Tr> <Td> Teresa Gallagher </Td> <Td> UK </Td> <Td> Emily , Lady Hatt ( Season 13 , `` Day of the Diesels '' and Season 15 ) , The Duchess of Boxford , Stephen Hatt ( `` Diesel 's Special Delivery '' ) , Bridget Hatt , Bridget Hatt 's friends , the teacher , the laundry lady , small little boy , some children , the school children , little girl in the red dress , the blonde - hair girl , the blonde - hair boy and Albert 's wife </Td> </Tr> <Tr> <Td> US </Td> <Td> The blond - haired girl and the blonde - haired boy ( `` Very Important Sheep '' ) </Td> </Tr> <Tr> <Td> UK / US </Td> <Td> Belle , Frieda , Gina , Mavis , Annie , Clarabel , Judy , Lady Hatt ( Season 17 only and Season 21 onwards ) , the teacher ( Season 18 only ) , the ginger - hair boy , the shouting little boy , the lady with the big hat , some passengers , the Knapford Station speaker ( `` The Adventure Begins '' ) , some children ( `` The Adventure Begins '' onwards ) , the school children ( `` Lost Property '' ) , Stephen Hatt , Bridget Hatt , the lady in the blue dress , the barrow fan ( `` Reds vs. Blues '' and `` Useful Railway '' ) , Albert 's wife ( `` Thomas the Babysitter '' and `` Unscheduled Stops '' ) , the lady in the spring green dress , the female puppet show entertainer , little girl in the turquoise dress with pink flowers , the lady in the white dress and gray vest , the lady in the white shirt , light brown skirt and hat , the lady in the grayish white shirt , blackish gray skirt , and white pearl necklace , the chubby little boy in dark green shirt and dark gray shorts and the lady in the yellow dress and hat </Td> </Tr> <Tr> <Td> Bob Golding </Td> <Td> Stephen , Sidney ( series 17 onwards ) , Ivan , some dock workers ( `` Tale of the Brave '' ) and a railway inspector ( `` Lost Property '' ) </Td> </Tr> <Tr> <Td> Mike Grady </Td> <Td> Sir Robert Norramby </Td> </Tr> <Tr> <Td> Rasmus Hardiker </Td> <Td> Philip and Some Troublesome Trucks ( `` The Fastest Red Engine on Sodor '' only ) </Td> </Tr> <Tr> <Td> UK </Td> <Td> Monty </Td> </Tr> <Tr> <Td> William Hope </Td> <Td> US </Td> <Td> Edward , Toby , Stephen Hatt ( `` Thomas and the Runaway Kite '' only ) , Whiff , Bash , Rocky , Farmer McColl , the Duke of Boxford , the blond - haired boy ( `` Merry Misty Island '' and `` The Way She Does It '' only ) , the Maithwaite stationmaster ( `` Double
<Table> <Tr> <Th> Actor / Actress </Th> <Th> Region </Th> <Th> Role ( s ) </Th> </Tr> <Tr> <Td> Joseph May </Td> <Td> US </Td> <Td> Thomas ( `` The Adventure Begins '' onwards ) </Td> </Tr> <Tr> <Td> John Hasler </Td> <Td> UK </Td> </Tr> <Tr> <Td> UK / US </Td> <Td> Rheneas ( series 20 onwards ) </Td> </Tr> <Tr> <Td> David Bedella </Td> <Td> Victor , Carlos , The Mayor of Sodor and the Cuban man </Td> </Tr> <Tr> <Td> Jamie Campbell Bower </Td> <Td> Skiff </Td> </Tr> <Tr> <Td> Jonathan Broadbent </Td> <Td> Bill , Ben and The First Slip Coach </Td> </Tr> <Tr> <Td> Nathan Clarke </Td> <Td> Alfie </Td> </Tr> <Tr> <Td> Olivia Colman </Td> <Td> Marion </Td> </Tr> <Tr> <Td> Jules de Jongh </Td> <Td> US </Td> <Td> Emily , Lady Hatt ( Season 13 , `` Day of the Diesels '' , and Season 15 ) , the Duchess of Boxford , Stephen Hatt ( `` Diesel 's Special Delivery '' ) , Bridget Hatt , Bridget Hatt 's friends , Mavis ( Season 13 -- 16 ) , the teacher , the laundry lady , some children , small little boy , the ginger - haired boy ( `` Diesel 's Special Delivery '' , `` Emily and Dash '' , `` Percy the Snowman '' , `` Emily 's Winter Party Special '' and `` Pouty James '' ) , little girl in the red dress , the blond - haired boy ( Season 15 -- 18 ) , the blond - haired girl , and the school children </Td> </Tr> <Tr> <Td> UK / US </Td> <Td> Emily ( `` 4 - D Bubbling Boilers '' only ) and Alicia Botti </Td> </Tr> <Tr> <Td> Jonathan Forbes </Td> <Td> Connor </Td> </Tr> <Tr> <Td> Teresa Gallagher </Td> <Td> UK </Td> <Td> Emily , Lady Hatt ( Season 13 , `` Day of the Diesels '' and Season 15 ) , The Duchess of Boxford , Stephen Hatt ( `` Diesel 's Special Delivery '' ) , Bridget Hatt , Bridget Hatt 's friends , the teacher , the laundry lady , small little boy , some children , the school children , little girl in the red dress , the blonde - hair girl , the blonde - hair boy and Albert 's wife </Td> </Tr> <Tr> <Td> US </Td> <Td> The blond - haired girl and the blonde - haired boy ( `` Very Important Sheep '' ) </Td> </Tr> <Tr> <Td> UK / US </Td> <Td> Belle , Frieda , Gina , Mavis , Annie , Clarabel , Judy , Lady Hatt ( Season 17 only and Season 21 onwards ) , the teacher ( Season 18 only ) , the ginger - hair boy , the shouting little boy , the lady with the big hat , some passengers , the Knapford Station speaker ( `` The Adventure Begins '' ) , some children ( `` The Adventure Begins '' onwards ) , the school children ( `` Lost Property '' ) , Stephen Hatt , Bridget Hatt , the lady in the blue dress , the barrow fan ( `` Reds vs. Blues '' and `` Useful Railway '' ) , Albert 's wife ( `` Thomas the Babysitter '' and `` Unscheduled Stops '' ) , the lady in the spring green dress , the female puppet show entertainer , little girl in the turquoise dress with pink flowers , the lady in the white dress and gray vest , the lady in the white shirt , light brown skirt and hat , the lady in the grayish white shirt , blackish gray skirt , and white pearl necklace , the chubby little boy in dark green shirt and dark gray shorts and the lady in the yellow dress and hat </Td> </Tr> <Tr> <Td> Bob Golding </Td> <Td> Stephen , Sidney ( series 17 onwards ) , Ivan , some dock workers ( `` Tale of the Brave '' ) and a railway inspector ( `` Lost Property '' ) </Td> </Tr> <Tr> <Td> Mike Grady </Td> <Td> Sir Robert Norramby </Td> </Tr> <Tr> <Td> Rasmus Hardiker </Td> <Td> Philip and Some Troublesome Trucks ( `` The Fastest Red Engine on Sodor '' only ) </Td> </Tr> <Tr> <Td> UK </Td> <Td> Monty </Td> </Tr> <Tr> <Td> William Hope </Td> <Td> US </Td> <Td> Edward , Toby , Stephen Hatt ( `` Thomas and the Runaway Kite '' only ) , Whiff , Bash , Rocky , Farmer McColl , the Duke of Boxford , the blond - haired boy ( `` Merry Misty Island '' and `` The Way She Does It '' only ) , the Maithwaite stationmaster ( `` Double
who does the voiceover for thomas the tank engine
who does the voiceover for thomas the tank engine
Joseph May John Hasler
Joseph May John Hasler