UK's Spire Healthcare soars on possible $1.35 billion cash offer from Toscafund
** Shares of Spire Healthcare SPI.L up 43.3% at 215.5p ** Hits highest since Sept 2025 ** Second-largest shareholder Toscafund proposes non-binding 250p per share cash offer, valuing group at about billion pounds ($1.35 billion) ** Board would be minded to recommend unanimously if firm offer made on these terms; Toscafund has until 11 June to announce firm intention or walk away ** In 2026, stock has gained about 29.0% (Reporting by Judes Joseph in Bengaluru) ((judes.joseph@thomsonreuters.com;))