Neither Yahoo nor The Telegraph make an estimate given in some Oxford study more valid. The study has to be evaluated for its own claims. The Telegraph can only

Neither Yahoo nor The Telegraph make an estimate given in some Oxford study more valid. The study has to be evaluated for its own claims. The Telegraph can only be checked if they distorted the claims or introduced an additional bias. Yahoo just made a copy. But still the Oxford claim it not about California at all, and it's about 0.6% of all reported Covid-19 deaths in the UK, meaning it's under the "noise" level of the real signal. It's about less than 300 deaths, in the country with reported 41000 Covid-19 deaths. To compare, there are around 15000 reported Covid-19 deaths in California, so it would be about around 100 deaths in California, if it were possible to claim that there are similarities, and nobody can even claim that.