The Advertising Standards Authority (ASA) is the independent regulatory body that oversees advertising across all media in the UK. It applies advertising codes to ensure ads are truthful, honest and do not harm or offend consumers. The ASA is funded by a small levy placed on advertising spending and income from seminars. It operates independently from government and industry to adjudicate complaints about potential code violations. The ASA has received complaints about ads from charities like Barnardo's containing disturbing images and supermarket ads like Tesco for issues with small print and misleading savings claims.