asked the Minister of Aviation if he will take powers to ensure that accurate statistics about Commonwealth migration by air are available to Her Majesty's Government.

It was announced in December, 1960, that the Government had decided to collect migration and tourist statistics on air routes by voluntary sampling methods. Consideration had been given during 1960 to the possibility of compelling British citizens arriving or departing by air to fill in special forms and provide various pieces of information under the Statistics of Trade Act. The idea was—I believe rightly—dropped in favour of voluntary sampling.