Not including any Thomas the Tank Engine stuff, here is what I know of so far:
Item Number: Description - Year Released
7-11020: “Hogwarts Express” - 4-6-0 Hall class engine & 3 coaches (2007)
7-11142: Express “Add on 2-pack” - 2 coaches (2007)
6-35229: Hogwarts “Dementors” coach without sound - 1 coach (2007)
2023170: Hogwarts Express LionChief set - 4-6-0 Hall class engine & 3 coaches including Dementors coach (2020)
6-85264: Hogwarts Express “Add on” coach (2020)
6-84767: Hogwarts “Dementors” coach with sound - 1 coach (2020)
6-38671: “North Pole Central” - 4-6-0 Hall class engine in red (unknown year)
6-38691: “North Pole Central” - 4-6-0 Hall class engine in green (unknown year)
6-35250: “North Pole Express” Passenger Car 2-pack (2012)
6-18745: “Hallows Eve Express” (2012)
6-35219: “Hallows Eve Express” Passenger Car 2-pack (2012)
6-35256: “Hallows Eve Express” Passenger Car 2-pack #2 (2012)
6-30084: Shakespeare Express ‘‘Kinlet Hall’’ set - 4-6-0 Hall class engine & 3 coaches (2008)
6-81279: “Albert Hall” train set 4-6-0 Hall class engine & 3 coaches (2014) (looks to be a repackaged Shakespeare set with LionChief remote control)
6-81729: European Albert Hall “Add on 2-pack” - 2 coaches (2014)
2023090: “Witherstock Hall” Passenger set - 4-6-0 Hall class engine & 3 coaches (2020)
2027810: Great Central Pullman Coach - 1 coach (2020)