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The electrical transport properties of (Li,Fe)OHFeSe films have been investigated in detail. The sharply textured films, prepared by matrix-assisted hydrothermal epitaxy (MHE) on LaAlO3, show a zero-resistance critical temperature T c of ∼42 K, J c values well above 1 MA cm-2 at low temperatures, and a maximum pinning force density F P of ∼100 GN m-3 at 4 K. The activation energy U 0 for thermal depinning of flux lines has been resolved for low magnetic fields, it agrees well with literature data. The coherence lengths and penetration depth were estimated via upper critical field B c2 and self-field J c, respectively, to be ξ ab ∼ 2.7 nm, ξ c = 0.24 nm, and λ ab ∼ 160-200 nm. The layered crystal structure leads to highly anisotropic and two-dimensional electrical properties, including trapping and lock-in of vortices. © 2020 The Author(s). Published by IOP Publishing Ltd. ; Original content from this work may be used under the terms of the . Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. National Key Research and Development Program of China 2017YFA0303003 2016YFA0300300 Strategic Priority Research Program and Key Research Program of Frontier Sciences of the Chi-nese Academy of Sciences QYZDY-SSW-SLH001 XDB25000000 state assignment of Minobrnauki of Russia Act 211 Government of the Russian Federation 02.A03.21.0006 National Natural Science Foundation of China 11888101 11834016.