Utilize the input text as a context reference, choose the right relationship between Nimrod MRA4 and BAE Systems from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Since scrapping the delayed and over-budget BAE Systems Nimrod MRA4 in 2010, experts say Britain has struggled to carry out aerial hunts for submarines and objects on the surface.

Answer: manufacturer