This is the Burial law Amendment Act of 1880.
Google 'OPSI.Gov.uk' and search for the act.
I have copied section 1 of 16 sections . The other sections say how the burial is to be done. Quite interesting.
.1 After passing of Act notice may be given that burial will take place in churchyard or graveyard without the rites of the Church of England .Any relative, friend, or legal representative having the charge of or being responsible for the burial of a deceased person may give forty-eight hours notice in writing, indorsed on the outside “Notice of Burial,” to, or leave or cause the same to be left at the usual place of abode of the rector, vicar, or other incumbent, or in his absence the officiating minister in charge of any parish or ecclesiastical district or place, or any person appointed by him to receive such notice, that it is intended that such deceased person shall be buried within the churchyard or graveyard of such parish or ecclesiastical district or place without the performance, in the manner prescribed by law, of the service for the burial of the dead according to the rites of the Church of England, and after receiving such notice no rector, vicar, incumbent, or officiating minister shall be liable to any censure or penalty, ecclesiastical or civil, for permitting any such burial as aforesaid. Such notice shall be in writing, plainly signed with the name and stating the address of the person giving it, and shall be in the form or to the effect of Schedule (A.) annexed to this Act.
ithout the consent of the vicar. The service can be in any form