CREATE TABLE table_203_340 (id NUMBER, "rank" NUMBER, "airport" CLOB, "passengers handled" NUMBER, "% change 2011 / 12" NUMBER)

which airport has no more than 30,000 passengers handled among the 10 busiest routes to and from london southend airport in 2012 ?
SELECT "airport" FROM table_203_340 WHERE "passengers handled" <= 30000
SELECT "airport" FROM "table_203_340" WHERE "passengers handled" <= 30000