Did M3 employ a British costume designer of M0 and M1
SELECT count(*) WHERE {
?x0 ns:film.film_costumer_designer.costume_design_for_film M0 .
?x0 ns:film.film_costumer_designer.costume_design_for_film M1 .
?x0 ns:people.person.nationality ns:m.07ssc .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}