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The UK blamed the 
 of workers on "years of underinvestment in 
". It said it was doing its best to build 300,000 new homes. It added: "We will pull every 
 to deliver on our commitment." However, a housebuilding 
 called the government's homebuilding 
 "unrealistic". He said training 
 workers could take "a 
". He called the current 
 of 5,000 new 
 each year a "
 in the ocean".