A tithe rentcharge, notwithstanding that it exceeds twenty shillings, shall, on the application of the owner of the land charged therewith, and without the consent of the owner of the rentcharge, be directed by the Board of Agriculture and Fisheries to be redeemed under and in accordance with the Tithe Acts, 1836 to 1891, as amended by this Act, unless, owing to any exceptional circumstances, the Board, otherwise direct.