We present the total length and total weight (wet mass) data of common blenny (Lipophrys pholis) caught from protected and unprotected rocky shores of two contrasting marine provinces in the temperate North-eastern Atlantic: Northern European Seas (NES) and Lusitania (LU). The samplings locations in NES were in Wales and England, and in LU were in Spain. Fish from NES were caught between August 2010 and February 2011, while LU's specimens were collected between February 2003 and May 2016. Fish were collected using hand nets (mesh size: 1.5 mm) and clove oil and seawater solution as an anaesthethic to reduce distress. This dataset was collected to compare the growth and body condition of L. pholis from protected and unprotected rocky shores of two contrasting marine provinces of the Northeast Atlantic. Each row corresponds to the observation of one fish. Location type, province, country, location (including latitude and longitude), date, species name, total length (cm) and total weight (g) are provided.