New Government Guidelines for Baptisms, Weddings & Funerals

As of 28 September, the rule of six will apply to standalone religious and belief-based life cycle ceremonies, such as stone setting ceremonies or wakes. This means that these events must be limited to 6 attendees.

Events like christenings and bar/bat mitzvahs can take place as part of a larger gathering within communal worship provided that groups of more than 6 do not mingle.

Funerals are limited to thirty and Weddings a maximum of fifteen attendees.

https://www.gov.uk/government/publications/coronavirus-outbreak-faqs-what-you-can-and-cant-do/coronavirus-outbreak-faqs-what-you-can-and-cant-do