Can this set be added to ?

HI Julie, thank s for your enquiry, this is the only Thomas set that is made by Tomy so we dont think it can be added too. We hope this helps.  if you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our online store finder. Here you can find contact details for your nearest Baby On The Move Store where one of our team experts will be happy to assist you in your product search and help answer any further questions you may have. We hope this has helped with your query.