(Adds details throughout, comment from Thames Water & creditor group in paragraph 4) Sept 30 (Reuters) – Some creditors of Thames Water will pledge to retain their ownership in the struggling British utility until 2030 as part of a rescue plan, Sky News reported on Tuesday. Earlier this month, the creditor group — named London & Valley Water and comprising 15 institutions including Aberdeen Investments, Elliott, PIMCO and Silverpoint Capital — proposed a last-ditch rescue plan to prevent the utility from being nationalised. The lender group, which accounts for the bulk of the company's 20 billion pound ($26.90 billion) debt pile, are to pledge to Ofwat, the industry regulator, that they will not offload the company until it is in a sufficiently healthy position to attain a stock market lis
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