Table schema:
CREATE TABLE table_name_89 (earnings_per_share__p_ INTEGER, year_ended VARCHAR, revenue__£million_ VARCHAR)

Question: When revenue is smaller than 4,177 million in year 2008, what is the sum of earnings per share?
SQL: SELECT SUM(earnings_per_share__p_) FROM table_name_89 WHERE year_ended = "2008" AND revenue__£million_ < 4 OFFSET 177