I am writing to inform you that I do not give my consent for (XXX) to have any form of the SARS-CoV-2 testing, including the lateral flow testing.
There are many reason why I will not give permission for my (SON/DAUGHTER) to be tested, but my main motive is for health reason. The testing swabs are sterilised in Ethylene Oxide , which has been labeled a Group 1 Carcinogen, the most potent form of cancer causing chemical . As well as this major health hazard, there are other detrimental side effects from short term exposure to ethylene oxide which include include eye and upper respiratory tract irritation, nausea, vomiting, diarrhoea, headache, dizziness, malaise, fatigue, muscle weakness, and signs and symptoms of peripheral neuropathy .
Another important point to make is that lateral flow testing is extremely unreliable -“ University of Birmingham and Scottish universities suggesting that the lateral flow tests had a sensitivity of just 3% (the proportion of people with covid-19 who tested positive) and that 58% of the positives were false positives.” 
As well as being very unreliable, it is not even a medically accurate form of testing. “Previous data from the Liverpool mass testing pilot programme found that lateral flow tests detected just 48.89% of covid-19 infections in asymptomatic people when compared with a polymerase chain reaction (PCR) test. It also found that the Innova Lateral Flow SARS-CoV-2 antigen test failed to detect three in 10 cases with the highest viral loads.”  A minister at the Department of Health and Social Care admitted that mass swab testing was “not an accurate way of screening the general population” and could provide false reassurance. 
A team of scientists at the Department of Medical Epidemiology and Biostatistics have concluded that children are not the main drivers of the pandemic after carrying out a systemic review of more than 47 separate studies. The same research also stated that children are unlikely to infect their families or teachers which has been backed up by a huge study of 10 million people on asymptomatic transmission, published in the British Medical Journal which concluded that asymptomatic transmission of covid-19 didn’t occur at all .
The average age of a Covid death is 82, there has not been a single case of a child who was not already profoundly ill that has died ‘WITH’ Covid-19, let alone ‘from’ in Britain. I see absolutely no reason whatsoever to continually subject children to continuous and invasive testing, especially when they are not exhibiting any symptoms of illness.
In another study by Public Health England, published in the British Medical Journal, it states - “The absence of strong evidence that asymptomatic people are a driver of transmission is another good reason for pausing the roll out of mass testing in schools, universities, and communities” 
Therefore, we are declining this on medical and ethical reasons, which we do not need to divulge, but as you can see above, the science is overwhelmingly against these testing strategies. Whilst my child is at school, I will not have concerns about keeping (HIM/HER) safe and free from harm. A school is a place of education and I would like to remind you that it is illegal to refuse a child education on the basis of declining to be tested.
When signing the agreement to enrol (XXX) into the school, we did not agree for any testing or intervention. (XXX) enjoys the school, but as per (HIS/HER) rights, I will be taking legal action and holding the school and the individual personally liable if ANYONE tests (HIM/HER) - as stated, we DO NOT give consent.
 - https://www.bmj.com/content/371/bmj.m4851...)”