Recently JET has been operated with beryllium limiters. This permits a much wider range of operating densities <ne> for a given plasma current IP than was possible with carbon limiters. The edge value of the cross-field diffusion coefficient D⊥SOL been deduced from Langmuir probe measurements of the density scrape-off thickness in the SOL, λn. It is thus possible to establish whether D⊥ depends on plasma parameters, independent of any dependence on IP, q or B. It was found that the experimental results for 3MA, 2.3T ohmically heated discharges are in fairly close agreement with the Bohm value, i.e., linearly dependent on edge temperature. The edge temperatures and densities are closely coupled, however, and the data can also be reasonably fitted by D⊥SOL ∝ n–l/ 2 edge.