But there won't be too many?
ONS 1 in 230 rate, worst case Porton Down 1in 250 false positive and 0.7 rate.
5million kids, will mean 20,000 false positives, 15,217 true positives, twice a week requires just 70,000 more PCR tests a week.
According to gov data page, 750,000 is the daily capacity and currently around 450,000 is the highest ever done (at the peak in the first weeks of jan) and only 300,000 at the minute.
There would be absolutely no problem confirming all LFT positives right now.