The Places of Religious Worship Certifying Act 1852
The Places of Worship Registration Act 1855
Earlier Acts regarding places of worship were:
Toleration Act 1688 (Protestant Non-Conformists)
Roman Catholic Relief Act 1791
The Places of Worship Registration Act 1855 provided for a building (or room(s)) used by a religious congregation to be registered for religious worship.
"An Act to amend the Law concerning the certifying and registering of Places of religious Worship in England"
Territorial extent: England and Wales. Royal Assent: 30th July 1855. Status: Current
NB Church of England and the Church in Wales are exempt.
Registration was not compulsory under 1855 Act. Registered places of worship gained financial advantage under the Charitable Trusts Act 1853. An unregistered place of worship cannot be used for the solemnisation of marriage.
(Wikipedia)
1855 Act stipulated that a list of all registered places be published in 1856 "and at such subsequent periods as shall be …."
Exemption for C. of E.
"Introductory text
10. Nothing to affect churches, etc. of Established Church
Nothing in this Act shall affect or be construed to affect the churches or chapels of the Church of England, or the celebration of divine service according to the rites and ceremonies of the said Church of England, by ministers of such church, in any place hitherto used for such purpose, or being now or hereafter duly consecrated or licensed by any archbishop or bishop or other person lawfully authorized to consecrate or licence the same."
www.legislation.gov.uk/ukpga/Vict/18-19/81/contents I assume from the above that the bishop licensed the schoolroom at Clayton for religious services.