DynamicSpirit
Established Member
Ashford International to Charing Cross is only 53 minutes via HS1/Victoria/Bakerloo. You're not going to match that via Tonbridge. Might as well provide South East London (areas with metro services to Orpington) with a better service to East Kent instead. An Orpington call only adds two minutes to an Ashford-Tonbridge-London service.
From my travels on the tube, I find that a highly optimistic timing. I don't know who came up with it, however I rarely find negotiating the tube that Quick.
I understand that Orpington is an important population centre, but I don't understand why it needs four trains an hour to Ashford ?
Haven't done that exact route, but Ashford-STP is usually 38 minutes. According to TfL, you're looking at 4 minutes Kings Cross-Oxford Circus (Victoria line) then 3 minutes Oxford Circus-Charing Cross. If memory serves me correctly, it's a cross platform interchange at Oxford Circus: Next to no walking. So maybe 3 minutes max to wait for a tube at Oxford Circus (on average, less). 1 minute to get out from the tube to ground level at Charing Cross (you'll end up at Trafalgar Square rather than Charing Cross station itself if you take the quickest exit). That all adds up to 49 minutes plus however long it takes to get between HS1 and the tube at Kings Cross. It's a bit of a walk so even for a a fittish person you're probably looking at 5-6 minutes. That adds up to 54-55 minutes. So I agree with Yorksrob that 53 minutes does seem to be pushing it a bit, but only by a couple of minutes. Ashford-Charing Cross will still be quicker via HS1, although obviously less convenient. And obviously, that's for someone who doesn't need to walk somewhere once they reach Charing Cross.
I think the thing with Orpington is that that's where a large number of metro services run to, so calling mainline trains at Orpington opens up a fair bit of SouthEast London - most obviously, including Bromley (although to be fair, the via Maidstone trains will take you from Ashford directly to Bromley South anyway). That'll be why so many trains stop there. Orpington station itself is a bit in the sticks, quite a fair distance from Orpington town centre, so perhaps not really so good as an end destination in its own right.