Use Google earth to find the location of the following and mark them on your map
You can also use the following website
www.ancient.eu/image/575/map-of-roman-britain-150-ad/
London Londinium
St. Albans Verulanium
York (Eboracum)
Vindlanda
Hadrian's Wall
Exeter
Dover
Wroxeter
Lincoln
Then draw on the main Roman Roads
Watling Street: Dover to London to St. Albans to Wroxeter
Fosse Way: Exeter to Lincoln
Ermine street: London to Lincoln.