Contact a local UK CAA Air Medical Examiner. The CAA maintain a list of AMEs throughout the country and you can google 'CAA Air Medical Examiners' to go direct to the list. Most AMEs are pilots and are also both commercial and private and so you will find them to be friendly and on your side.
You could possibly obtain a NPPL, LAPL or a PPL without restriction. I'm sure a local AME will be happy to advise you on the telephone prior to you having a formal medical, and without charge. You can be confident that the AME advice will be accurate.
From the UK CAA website: the medical required for a PPL:
(2) For a class 2 medical certificate:
(i) Distant visual acuity, with or without correction, shall be 6/12 (0,5) or better in each eye separately and visual acuity with both eyes shall be 6/9 (0,7) or better.
(ii) Notwithstanding point (b)(2)(i), applicants with substandard vision in one eye or monocularity may be assessed as fit, in consultation with the medical assessor of the licensing authority and subject to a satisfactory ophthalmological evaluation.
Last edited by Fl1ingfrog; 31st Aug 2020 at 19:02.