The group’s campaign against a proposed ‘Made in the EU’ label was launched this week.
The organisation will also lobby the European Commission on its planned pan-European brand.
Walpole believes commission proposals to badge all EU products this way would devalue the brands of its 100 members, which include Harrods, Burberry and the Financial Times.
Walpole chief executive Julia Carrick said the group was also working with its Italian and French equivalents.
College Hill is also advising Walpole on a 12-month awareness campaign. Other lobbying activities include moves to improve European counterfeiting legislation.
The Walpole Group was formed in 1992, taking its name from 18th century statesman Sir Robert Walpole, widely regarded as the first prime minister and a promoter of overseas trade.