So far the British have preferred a policy of a voluntary approach to restricting advertising and high taxes on tobacco products.
less than half of the british population prefer restricted advertising
Since there's a preferred option, the non preferred is less than half
( z1 prefer :ARG0 ( z2 population :ARG1-of ( z3 include :ARG3 "1/2" :ARG2 ( z4 population :mod ( z5 country :name ( z6 name :op "Britain" ) ) ) ) ) :ARG1 ( z7 restrict :ARG1 ( z8 advertise ) ) )