Tim and the Hidden People by Sheila K McCullagh is a 1970s reading scheme originally devised for young children 4-7yrs. It consists of 32 books, each 32 pages long and illustrated by Pat Cook and later Ray Mutimer.
The Tim books are about a boy called Tim who lives in a house in The Yard. The books begin with Tim finding a key which enables him to see the Hidden People, he befriends Tobias the black cat and has many adventures.
Sheila McCullagh also wrote many other books, including Puddle Lane, The Village with Three Corners, Dragon Pirate Stories, and Griffin Pirate Stories.
Series A
All the Fun of the Fair
Magic in The Yard
The Highwayman
The Key
Tim and the Smugglers
Tim and the Witches
Tim and Tobias
Tim meets Captain Jory
Series B
At the House of the Safe Witch
Captain Jory Lends a Hand
On the Night of the Full Moon
Red for Danger
The Return of The Key
The Stump People
Tim in Hiding
Watchers in The Yard
Series C
Escape by Night
Mandrake’s Castle
On the Road to the North
Riding into Danger
The Pool by the Whispering Trees
Three Fires on the Dark Tower
Tim in Trouble
Tim Rides on the Ghost Bus
Series D
At the Hill of the Stone Prisons
Danger on the Moor
In Diaman’s Cave
News from the North
The Cave of the Wind Witches
The Cry in the Dark
The Shield Stone
The Storm over the Sea
British Comics 
What a gift. Thank you so much for taking the time to source and upload these
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You are welcome, thanks to Mark who provided these.
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Hello! I hate to bother you but Google Drive refuses to let me finish downloading the rest of the series because it says I’ve hit a quota wall.
Can Series C4 and all of D be uploaded to a host who doesn’t have download restrictions?
Thank you!
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No sorry, i am afraid you have to wait until tomorrow or so.
This might be useful
https://helpdeskgeek.com/how-to/how-to-fix-google-drive-download-quota-is-exceeded-error/
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