CREATE TABLE table_20265 ("Platform" FLOAT, "Frequency  ( per hour ) " FLOAT, "Destination" TEXT, "Service Pattern" TEXT, "Operator" TEXT, "Line" TEXT)

When London Bridge is the destination, how many lines are there?
SELECT COUNT("Line") FROM table_20265 WHERE "Destination" = 'London Bridge'
SELECT COUNT("Line") FROM "table_20265" WHERE "Destination" = 'London Bridge'