...Our rating on Santander UK (SanUK) balances its deep but relatively narrow U.K. banking franchise, against its solid capital base and well diversified funding and liquidity profile. Although it has developed a deep U.K. prime mortgage business, SanUK's overall scope remains narrower than U.K.-focused peers Lloyds and NatWest, both of which run materially larger commercial lending franchises, or Barclays, which has built an internationally diversified investment banking and credit card franchise. At the same time, SanUK's narrower scope, well managed balance sheet (in which corporate exposures have been steadily reduced), and focus on operating efficiency have enabled it to record resilient risk-adjusted earnings over the past 24 months. Furthermore, the combination of these factors has bolstered our view of its capitalization, with our risk-adjusted capital (RAC) ratio moving above 10%. SanUK's financial performance has improved materially. The bank has narrowed the scope of business significantly...