Purpose. The purpose of this paper it to understand loyalty in the multichannel retail context. The paper analyses the interplay between offline and online loyalty and the direct and indirect effects on loyalty of brand trust and brand attachment, in a cross-cultural study. Design/methodology/approach. Online survey answered by 761 multichannel apparel shoppers in two countries (UK and Spain). SEM multigroup analysis is performed to test the hypothesized relations and the role of culture as a moderating variable. Findings. Online loyalty is largely driven by offline loyalty, which is also positively affected by brand trust and brand attachment. These relationships hold across the two different cultures. Research limitations/implications. The findings confirm the validity of applying the theory of cognitive dissonance to explain multichannel shopping behaviours. We did not find culture affects the relationships in our model; however, the validity of these findings should be tested considering other cultural variables different from nationality. Practical implications. Multichannel retailers should focus on building trust and attachment towards the brand if they want to get online and offline loyalty. The efforts to build stronger bonds between the customer and the retail brand translate into higher loyalty, particularly towards the offline channels. Originality/value. This paper extends the literature on the interactions between online and offline behaviour by focusing on the power of the brand to build strong customer bonds. Our model considers the role of brand attachment together with brand trust in offline and online loyalty simultaneously.