...Nationwide Building Society (Nationwide) has a strong capital position and business performance, but its concentrated exposure to the leveraged U.K. household sector remains a key risk. Nationwide's deep U.K. mortgage franchise, disciplined strategic execution, and cautious risk appetite translate into significant financial resilience and support our rating. The firm delivered solid half-year results in September 2024, with underlying profit before tax of ú959 million after ú1.26 billion in September 2023, on the back of persistently high interest rates, a low impairment charge, and good cost control. The society remains one of the U.K.'s largest residential mortgage lenders and savings providers, focusing mainly on prime residential mortgage loans, and has a relatively small commercial lending portfolio....