UK homebuilders rise 7% to 23% after first-time buyer incentive

* British homebuilders index surges 13% after the British government on Saturday said its new equity loan scheme called "Your First Home" would be confirmed in next month's budget * The policy is aimed at injecting growth into the economy by assisting first-time home buyers to increase demand for house construction * Persimmon and Barratt Redrow rise 16% and 14%, respectively and are top gainers on FTSE 100 index * Vistry, Taylor Wimpey, and Bellway up between 14% to 15%, top gainers on FTSE mid-caps index * MJ Gleeson and Crest Nicholson up 20% and 16%, respectively * Sub-index.FTNMX402020 down ~16% YTD (Reporting by Nithyashree R B in Bengaluru) ((NithyashreeRB@thomsonreuters.com)