I am a graduate of Birmingham and Brighton Universities with degrees and postgraduate degrees in Physics, Astrophysics, Computer Science and Education and am also a Fellow of the Royal Astronomical Society and Fellow of the institute of Physics. I spent many years as a research associate at Birmingham University before moving out of cities. Now, rather than teaching in schools, I run the planetarium for The Observatory at Herstmonceux as well as providing their higher level education content. As that is a charitable organisation I also tutor physics and maths up to A level and all science disciplines up to GCSE.
Generally I run sessions face to face for local students or via zoom. You are close enough that we could do either. Each session is scheduled for a 60 minute slot but usually overruns. I will always be willing to let a session overrun rather than stop mid topic. If a session does overrun then I will not charge for the overrun, If a session underruns then I reduce the charge proportionately. In addition to the scheduled hour session I usually, but not always, send an email with additional notes and exercises for the student. I encourage students to attempt those and email me their answers before the next session as that makes the next session much more effective if we do not need to spend time going through material a student has demonstrated that they understand. That is included in the session cost.
The first session is always uncharged because that is often a rambling ill directed session while I determine a student`s strengths, requirements etc.
A session is notionally one hour of zoom, plus additional set work via email and students are free to email me between sessions with any relevant questions.
If a student cannot make a session for any reason then as long as I know before the session start then I will not charge, even if it is only 30 minutes notice. And that is any reason, I would rather reschedule than have a student attend when they have returned exhausted from a mountaineering trip or stress because their bus is stuck in traffic. If a student hasnt let me know in advance and doesnt show at the start of the session then I leave the session open for quarter hour just in case they are slightly delayed.