I think thats very questionable, did not want to pay for them (like the US Gov and most of the rest of the world in the 1920s) but couldnt....?The Brits wanted G3s, but couldn't afford them, even without a Treaty,and got Nelsol and Rodsol instead.
They did pay for N&R and paid extra to build them slow and paid compensation for the 2 other cancelled not built G3s and subsidies to keep capacity in heavy weapons and armour plate due to WNT.....and built 13x 8" 10,000t heavy cruisers.....?
We are still talking very small sums compared to the 2nd largest economy on earth...... I think GB could easily afford to build say 2-4 G3 slowly every 2-3 years in a nice orderly build schedule with the yards competing for the work to keep the cost down and all still in business like pre WWI.
I could add that RN would be forced to agree to send to reserve two old BB and a BC for each new G3 so the crew costs will save money long term as well?