Why Britain canceled later Monmouth and Topaze cruisers

Why were the last Monmouth-class armored cruiser and four Topaze-class protected cruisers canceled?

They were no longer the best use of available funds compared with newer priorities.

The Monmouth and Topaze cancellations reflected a change in priorities rather than a single catastrophic design fault. The Admiralty no longer considered the additional ships necessary enough to protect their funding. Money committed to late members of the classes could instead support programs judged more useful. The decision reflects comparative procurement value and does not condemn every existing ship in either class.