Yes there were various instances of Members of Parliament complaining about the cost of the war. Captain Archibald Maule Ramsay was by far the MP who was most opposed to the war, however his dissatisfaction with the war was mainly due to his support for the Nazis and his dislike of Jews. Captain Ramsay believed that the entire war was the result of a Jewish conspiracy. Ramsay was the founder of the right club an association of 230 somewhat prominent Brits who opposed what they viewed as the Jewish control of the conservative party. After the outbreak of the war the right club opposed the war and publicly campaigned for an end to the war. While their opposition to the war was mainly based on the casualties that would be caused by the war, and saying the war was "A Jews War" they did sometimes point out the financial cost of the war as a part of their arguments against the war, the club was eventually broken up on 23 Ma 1940 by a harshening of Defence Regulation 18B this caused some members of the right club to be arrested, including Captain Ramsay, who was the only MP to be arrested during the war.

When increases in expenditure were brought before parliament Sir Stanley Reed, Sir Irving Albery, and Sir Percy Harris complained that the way that parliament had to authorise an amount of money to be spent on the war, instead of authorising spending item by item meant that parliament would lose control of the way the money was spent and that this would lead to corruption, waste and inefficiency.

Other instances of MPs complaining about the cost of the war are Daniel Lipson and James Maxton pointing out that a high war expenditure would lead to inflation and that the government should limit the amount of money they spent on the war. One instance of them complaining about the cost of the war was on 16 March 1944 when they said in parliament that there needed to be limit on the amount that was spent on the war.

Another MP is William Craven Ellis who pointed out that money spent on the war would eventually have to be paid back and on 16 May 1944 opposed increasing war expenditure by £1,000,000,000 due to the war expenditure and deficit being far too high already.

Austin Hopkins also opposed the increase in war expenditure by pointing out that at least 20% of the money was being wasted. Mr Hopkins also mentioned his belief that some people were being paid too much due to the high war expenditure. For example he said Munitions workers were being paid 2 to 4 times what they should be. He also pointed out that the cost allocation system meant that inefficient firms were getting paid more than efficient ones.