VFR 'On Top'

[Jumbo Driver]

For a basic PPL in the circumstances you mention, I think you'll find the relevant restriction is contained in the ANO Schedule 8, where it says ...

PART A – FLIGHT CREW LICENCES

Section 1 – United Kingdom Licences

Sub-Section 1 AEROPLANE PILOTS

Private Pilot’s Licence (Aeroplanes) ...

Privileges:
...
(2) He shall not:
...

(c) unless his licence includes an instrument rating (aeroplane) or an instrument meteorological conditions rating (aeroplanes), fly as pilot in command of such an aeroplane:
...

(iii) out of sight of the surface;

Hope this helps ...

JD