Four groups of 10 Scottish Blackface sheep each grazed at four different space allowances of 80, 100, 133 and 200 m2 per head in experiment 1 and 50, 67, 100 or 200 m2 per head in experiment 2. The group spent two weeks at each space allowance. To avoid confounding space allowance with grazing pressure, a rotational grazing system was used. Throughout the studies, the average distance between the sheep was measured from video recordings. As well, the distances that would occur based upon chance were also calculated based on simulations in which sheep were located within the plot in random chosen areas. The total amount of time spent grazing was higher when the sheep were provided 200 m2 per head. The total amount of time spent grazing was lower when the sheep were only provided 50 m2 of space. The space allowance did not appear to affect herbage intake, digestibility, biting rate or the proportion of grazing time spent performing investigative behaviours. There was not a difference between the inter-animal distances observed and those expected based on chance when the sheep were provided 50 to 133 m2 of space per sheep. At a space allowance of 200 m2 per sheep, the inter-animal distances were lower than what was expected based on chance. Regardless of space allowance, the average distance between a sheep and their nearest neighbour was always lower than the distance that was expected by chance. Based upon the results from this study, when female Blackface sheep graze on high quality, homogenous vegetation, there is enough space between individuals when provided from 50 to 200 m2 of space per sheep. There was not clear evidence of the sheep remaining in a group until they were provided with 200 m2 per sheep. Therefore, the relationship between grazing time and space allowance may be indicative of the extra time and effort the sheep must put into maintaining group cohesion when the space allowance increases.