Northampton is pretty obviously a failure of track and trace since levels have been high for some time. I saw a reference to 4 outbreaks but wouldnt be surprised if they all tracked back to the factory. It was noticeable in Isle of Anglesey that when they dealt with the outbreak the level of infections was lower than before.
I've looked again at the study of 6 London care homes, finding the actual research report www.ncbi.nlm.nih.gov/pmc/articles/PMC7387283/
It paints a rather different picture to the slant being placed on it. First the care homes studies probably did not have staff moving between them - not entirely clear but they dont appear to have been chosen with that in mind and their caveats include staff not wanting managers to know if they were working elsewhere.
Second the report talks of staff who worked in more than one home having higher infection rates. "Within this group, 15–18% of staff working in a single care home were infected with SARS-CoV-2 during the peak, which compares with 17.5% community sero-prevalence in London at that time.8 SARS-CoV-2 infection among staff working across different care homes, however, was 3-fold higher."
"Genomic analysis identified staff-only clusters, including clusters between patient-facing and non-patient staff, supporting staff to staff transmission. However, although identical viruses were identified in staff working in different care homes, WGS analysis could not distinguish whether this might have arisen by community transmission due to the low genetic diversity amongst circulating viruses."
and
"Finally, we identified a proportion of SARS-CoV-2 positive staff members, especially among those working across different care homes, who were symptomatic at the time of testing (Fig. 1). A recent study reported that more than 70% of care home staff felt obligated to come to work even when they were sick.10"
Pretty clear from the actual report that they did consider staff moving between homes as a risk and they saw staff interaction in the homes as behind the increased risk.
The slant placed on that report was clearly biased.
The Devon live website reported the outbreak in this way
"As the South West coronavirus total rose from 15 to 22 - with all the known confirmed cases in Torbay - we went to visit the village of Churston, where the church has been closed for deep cleaning after a parishioner who attended last Sunday's service was later confirmed to have the virus.
There are also at least two confirmed cases linked to nearby Churston Ferrers Grammar School, another primary school pupil at St Margaret Clitherow Catholic Primary School in Brixham and now a church goer is ill with the virus.
The exact number of confirmed cases in Torbay has not been released - but two GP surgeries in Torquay have been closed for at least a fortnight."
So it was quite likely that initial care home infections in the South West came via that outbreak. I see no evidence being provided that the initial push to get patients out of hospital increased infection in care homes.