Apple's brand is the biggest mover in this year's Business Week/Interbrand 'Top 100 Global Brands' survey.

Rated the world's 43rd-largest brand, Business Week reveals: "Based on its high brand loyalty and strong sales of the iPod, Apple is the biggest mover with a 24 per cent gain in brand value."

Business Week and Interbrand worked together to estimate the value of the world's leading 100 brands by dollar value. In other words, Apple's brand is worth 24 per cent more in dollar terms than it was one year ago.

Other big gains were made by Yahoo (No. 61, up 17 per cent); Amazon (No. 66, up 22 per cent); Samsung (No. 21, up 16 per cent); HSBC (No. 33, up 15 per cent). Overall brand values have climbed 2.2 per cent.

Some established brands saw their values dented in the last 12 months: Coca Cola, Microsoft, Disney and Ford lost value.

Coca Cola remains the world's most valuable brand, but saw a 4 per cent decline in its value; Microsoft, the world's second most valuable brand saw its dollar value decline 6 per cent. IBM, the world's third most valuable brand according to the survey saw its value grow 4 per cent in the period.

Acting to preserve public perception of their brand has led Coca Cola and Microsoft to "start to recognize the need to nurture stronger ties with consumers," writes Business Week.

Fast food and automobile brands suffered, as US consumers shift to healthier food, and competition increased in the car market.

Cartier and Estée Lauder debuted on the list for the first time at numbers 91 and 92 respectively.

Brand values are determined using a method Interbrand has used for 16 years. Value is calculated at the net present value of the earnings that the brand is expected to generate and secure in the future between July 1, 2003 to June 30, 2004. A brand must be worth over $2.1 billion to make the list and has to be global.