Long-finned squids are among the valuable resources exploited by English Channel demersal fisheries. This resource consists of two short-lived species (not distinguished by fishers): Loligo forbesii and Loligo vulgaris, which differ in the timing of their life cycle.In the present study, we investigated spatial, seasonal and long-term biomass variation of Loligo spp. in the English Channel using 22 years (2000-2021) of commercial fishing data to compute biomass indices. Results indicated that LPUE indices (computed per month for each statistical rectangle of the English Channel), standardized by vector autoregressive spatio-temporal (VAST) method, provided the best squid biomass estimator.Two distinct geographical patterns were observed in the English Channel, with low and stable biomass indices in the West and most of the fluctuations and seasonal variations in East. Seasonal patterns seem likely to be related to the presence of the two species, with the beginning of increase in June in the western part of the English Channel probably corresponding to the recruitment of L. forbesii and a second increase further east in October probably corresponding to L. vulgaris recruitment. Over the 22-year series there was an eastward shift in squid biomass since 2014, suggesting that L. forbesii distribution has declined in the English Channel.