By then the expansion of Bedford required more housing and land either side of Newnham Avenue was developed in the interwar period .
The rest of Newnham remained as undeveloped farmland and a site for gravel extraction until the 20th Century .
The expansion of Bedford required more housing and land either side of Newnham Avenue was developed in the interwar period .
The rest of Newnham remained as undeveloped farmland and a site for gravel extraction until the 20th Century .