LONDON Rating agency Moody’s on Friday raised concerns over the UK’s fiscal health following the release of the Labour government’s new budget, cautioning that increased borrowing will pose "an additional challenge" to public finances. The warning comes as UK gilt yields – the effective cost at which the government borrows – surged to their highest point this year on Thursday. Market reactions reflect growing investor apprehension, driven by the expected £28 billion ($36.18 billion) in