Concept:
Devi Prasad was a pioneering Indian studio potter, artist, and a prominent pacifist whose life was deeply influenced by Gandhian philosophy and Rabindranath Tagore's educational ideals.
Step 1:
Devi Prasad graduated from Kala Bhavana, Santiniketan, under the guidance of Nandalal Bose. He spent his early career immersed in art education in India.
Step 2:
In addition to his pottery, Prasad was heavily involved in the peace movement. His international recognition grew through his pacifist work rather than just his ceramics.
Step 3:
He left India to move to London when he was appointed the Secretary General of the War Resisters' International (WRI). Historical and biographical records date this specific relocation to London.
Step 4:
His tenure with the WRI in London began in 1962. He stayed in England for over a decade, establishing his own pottery studio there before eventually returning to India.
Step 5:
Therefore, his 10-year period in England commenced in 1962.
\[
\boxed{\text{(3) 1962 AD}}
\]