I had initially assumed that if people from two households went to a restaurant or pub together they would need to sit on separate, adjacent tables in order to maintain social distancing. I was envisaging needing to ask for "two tables for one, next to each other please" or "a table for 4 and a table for one."
However having read the FAQs on gov.uk it doesn't say anything about separate tables, it just says you should ensure that you socially distance as much as possible, and to bear this in mind when choosing where to sit at the table. It also mentions that premises should help with this. Do people think that restaurants etc will be able and willing to accommodate this? For example will 2 people be able to sit on a larger table than a small table for two to allow them to be far enough apart? Will a family of 4 plus 2 grandparents be able to be on table for 8?