** Slater and Gordon Ltd rises as much as 2.1 pctto highest since May 19
** UK's Financial Conduct Authority approves acquisition ofprofessional services division of Quindell PLC
** Consumer law firm says transaction will deliver"significant value" to all its shareholders
** Stock up 37.7 pct over past 12 months, outperforming 3.8pct rise in ASX All Ordinaries Index (Reuters Messaging;bhumika.sahani.thomsonreuters.com@reuters.net)