So do I take a THIRD test? 5 out 6 people in household positive.

[ShirtyShirly]

Scenario is this:

DC1 tested positive on the 13th - no symptoms but last had contact with positive case outside of household on the 10th, so to get a test I put that as the date symptoms started.

DCs 2 & 3 tested positive on the 15th (no symptoms)
DC 4, DH and I tested negative.

DC4 tested positive on the 19th (no symptoms)
I tested negative again.

DH had mild symptoms from the 19th and tested positive on the 22nd (test this morning and came back tonight).

So guidelines are that the household has to self isolate from 10 days of first positive test in the household, or 14 from symptoms, so my isolation is up on Tuesday (midnight on the 23rd) according to the NHS app.

I have no symptoms.

Do I take another test after the last one on Thursday being negative and then have to self isolate for another 10 days (really will lose the plot if I do!) or not bother and assume I’ve not got it.

WWYD?

The guidance really is quite clear: www.gov.uk/government/publications/covid-19-stay-at-home-guidance/stay-at-home-guidance-for-households-with-possible-coronavirus-covid-19-infection#if-you-live-with-someone-with-covid-19-symptoms-or-a-positive-test-result
The op should self isolate for 14 days from the first case if they don't have symptoms. (If they've now got symptoms then it's 10 days from when these developed). You don't need to get tests though I can see why getting one test towards the end of the isolation period might be wise if you thought youd picked it up later.

Even if you get a negative test result, you still have to isolate for the full 14 days.

If the first person tested positive on 13th then his 10 days starts from the date of the test was taken. The rest of the household isolates from 14 days from the date of the test. As each person tests positive that person starts a new 10 day period.

If symptoms start in someone after the original 14 day isolation then all the isolation periods start again.

They have changed the advice then, because originally the clock reset when the next person tests positive. For obvious reasons- in that chart the child who doesn't have symptoms could catch it from the father.

My nieces Uni flat were isolating for months as they each went down with it like ninepins.

I would self isolate from the date the latest positive got symptoms. Not sure why you think you should take a test, as you don't have symptoms.

I wonder if people would be so test-happy if they were billed for testing costs.

I thought the charts shown by pp were still valid.i didnt realise you had to start from zero for every positive case in your household. People could end up staying in for over a month.

The clock doesn't reset each time and that chart is still valid. It only resets if the original 14 day isolation ends and then someone gets symptoms

From .gov:

If you remain well, you can return to your normal routine at the end of the 14-day period. You do not need to isolate for longer than 14 days, even if other household members develop symptoms during this period. However, the person with new symptoms should now self-isolate for 10 days. People in the household who remain well after 14 days are unlikely to be infectious

The irony of you calling people thick when you're getting tests rather than just following the guidelines and isolating accordingly