Which company was based in London, United Kingdom?
CREATE TABLE table_15438337_1 (institution VARCHAR, country VARCHAR)
SELECT institution FROM table_15438337_1 WHERE country = "London, United Kingdom"
### Context: CREATE TABLE table_15438337_1 (institution VARCHAR, country VARCHAR) ### Question: Which company was based in London, United Kingdom? ### Answer: SELECT institution FROM table_15438337_1 WHERE country = "London, United Kingdom"