Many of the most famous characters in the books had their own bike,Fatty,Julian,Dick etc.
I don't think any manufactures are specifically named in any of the books?
Raleigh could easily have been the choice of many youngsters in the 1940's/50's/60's/70's.
The Raleigh Heritage Timeline
http://www.raleighbikes.com/" onclick="window.open(this.href);return false;
What bike did you have when you were a youth? Anyone have a Raleigh?Enid Blyton, British writer of children's books, presenting a Raleigh bicycle to 10-year-old Edward W G Morgan after he won the first prize in a road safety competition in London.