Both are Chinese-owned fast-fashion and general retail platforms that have exploded in UK popularity. Neither is a scam, but both come with significant caveats around consumer rights, data privacy, and ethical sourcing.
Temu is owned by NASDAQ-listed PDD Holdings and does process refunds, but serious data privacy concerns, invasive app permissions, and widespread product safety failures make it a high-risk choice for UK consumers. Use with care and avoid the app if possible.