Trivia: “Reverse” commuting only

[The exile]

Inspired by the “obscure services” thread:
There are hundreds of stations from which it is possible to commute to London every day by direct train. Which ones are only served the other way around? (Ie you can arrive from London by direct train, do a normal-ish day’s work and return by direct train but can’t do the “normal” commute to London directly)
Criteria:
1: Originating Station outside travelcard Z6
2: Destination “London terminals”
3: Direct service Mo - Fr on a regular basis (not some quirk of engineering timetables)

Start the ball rolling with Keynsham.

 

[Bumpkin]

If I interpret this correctly Kempton Park would fit. Doesn't have a London bound departure until 0918, and from then on half hourly. Only served before 0918 by trains towards Shepperton.

 

[The exile]

If I interpret this correctly Kempton Park would fit. Doesn't have a London bound departure until 0918, and from then on half hourly. Only served before 0918 by trains towards Shepperton.

Arguably yes - though pushing it a bit as a 10.30 - 18.00 shift with MI6 ( or is it 5?) would be doable! (other secretive employers are available)

 

[A S Leib]

At a stretch, Hayle? Commuting to London, it's possible to leave Paddington with a direct service at 19:04 but you can't get there before 14:27. For commuting from London to Hayle, there's an 18:03 (ex-Penzance via Bristol) but you'd need the Night Riviera to get to Hayle directly in the morning.

 

[The exile]

At a stretch, Hayle? Commuting to London, it's possible to leave Paddington with a direct service at 19:04 but you can't get there before 14:27. For commuting from London to Hayle, there's an 18:03 (ex-Penzance via Bristol) but you'd need the Night Riviera to get to Hayle directly in the morning.

It would work as a “one off” travelling down overnight, doing a day’s work then returning on the 18.02. The problem is that you wouldn’t be able to do it 2 days in succession as, even if your constitution was tough enough, you’d have to leave London for day 2 before you got back on day 1.