I can't help but comment on the arbitrary nature of the listing process. The original Engine Shed did not get listed and was consequently flattened to make a Tesco car park, but the Triangle Building, started in 1845 and much enlarged and adapted over the years, makes the list. The school of 1840 is not listed, nor is the Royal Engineer of 1841. Why is the Aylesbury Street School of 1906 listed and not the Moon Street School of 1908?
The information below is presented as links to the British Heritage site. The information is under crown copyright and cannot be reproduced here. Just as well perhaps, since there are a number of instances where the descriptions are factually wrong.
Area map of listed buildings
Church of St George the Martyr
Classroom at Wyvern First School
Former Railway Works Building
Former Royal Train Shed
Park Keeper's lodge
Stacey Hill Farm House
The farm house, built I understand, by the very young Charles Aveline is now occupied by the Milton Keynes Museum and can be visited during opening hours.
I haven't got much idea of what this is. I assume from the description that it was a garden structure in the grounds of the Vicarage.
Wyvern First School
The girls and infants continued to use the 1840 school on Creed Street until 1906 when this was built. At the time it was Wolverton's grandest school until the Secondary School opened at the end of Moon street in 1908. The Creed Street School did service as a Market Hall until the Agora was opened.