After gaining a further PhD in physics from Cambridge, Allibone returned to Metropolitan-Vickers, to take charge of their high-voltage research laboratory at Trafford Park, Manchester.

[4] Allibone remained at Metropolitan Vickers throughout the 1930s and 1940s, publishing a number of scientific papers on subjects such as high voltage research, and X-ray tubes.

In 1944 Allibone lead part of a team of British scientists sent to the United States, to work on the Manhattan Project, which developed the world's first atomic bomb.

Whilst at Aldermaston Court, Allibone was involved in pioneering research into nuclear fusion and electron microscopes, and was elected a Fellow of the Royal Society in 1948.

Allibone was one of the sponsors of the election to Fellowship of the Royal Society of his friend, the physicist John Samuel Forrest, Director of the Central Electricity Research Laboratory.