Looking at the latest posts in the Bridge Strike thread I noted the confusion between Horley and Horsley.
Just for fun and lockdown is boring I ran the journey through Nation Rail Enquiries. Some interesting results.
Route 1: Cost ?16:10 Journey time 1.28 Changes 2 Norwood Junction and Epsom. Hourly
Route 2: Cost ?16:10 Journey time 1.12 Changes 4 Redhill, Dorkig Deepdene (walk), Dorking Main Leatherhead Hourly
Route 3: Cost ?15.50 Journey time 1.20 or 26 Changes 2 Redhill Guildford. Half Hourly
Interesting route 2 is quickest but involves a walk
Route 2 is obviously easiest and is every 30 minutes off peak
I'd say route 3 with just 2 changes is the easiest. I come from Bookham and like Surrey455, from there, would go via Leatherhead, Dorking and Deepdene but Horsley being just that bit further, I think I'd instinctively go via Guildford and Redhill. Route 3 is, almost incredibly, now four trains an hour between Horsley and Guildford. When I was a Bookham resident, the SW services terminated at Effingham Jn - it can only be a good thing that Guildford is now on the departure screens at Epsom and Leatherhead (and Ashtead and Bookham), not Effingham and a change, regardless of how simple that change was.