§ Mr. Arthur Lewisasked the Minister of Posts and Telecommunications why he will not publish details of the extra revenue resulting to the Post Office Board by his agreeing to the Board increasing the 4d and 5d. postal stamps by 2d.
§ Mr. Stonehouse:Because the estimated yield from any given tariff change depends on the inter-relationship of many factors and no useful purpose would be served by publishing selected figures in isolation.