What qualifies as a support bubble?

[Jericoo]

Hypothetically, can a single person living alone go out to meet a friend (who lives in a shared house) in a Tier 2 area? Can they go to a restaurant together?

Yes but that must be a constant support bubble, rather than chopping and changing.

Officially.

Yes, if you make that person your support bubble then you can act as if you are part of her household, so you could go to a restaurant together.

Remember a) the same person must stay your support bubble, you can’t change to someone else and b) since you will be treated as part of her household, that means you will have to self isolate any time anyone in her household gets symptoms, until they get a test and the result of that test come back negative negative. This could happen a lot if she has a housemate prone to coughs, for example. If one of her household tests positive you’ll have to self isolate for 14 days.

In order to form a support bubble:
the single person and all adults in the friend's household must agree; and
neither the single person nor the friend's household can have been in a support bubble with anyone else at any point.

Great replies, thank you for clearing it up! I had no idea about the self-isolation aspect to it as well