There's obviously a huge demand to get between Heathrow and central London - a significant enough market to allow different types of service to be viable (the slow Underground, the faster Connect/Crossrail, the upmarket Express).
There's an argument for retaining Hex and an argument for replacing it (with even more Crossrail services), but I think that if you keep it then you need to retain the fifteen minute frequency - anything less just isn't going to be attractive enough - the kind of people who pay a premium for a plush 332 to save precious minutes to get to the Airport aren't going to wait around for a half hourly service - Hex needs to be four trains an hour or nothing.
Generally speaking, I'm not a huge fan of some Airport services, where these see capacity on busier "normal" routes constrained to satisfy quieter "airport" services (which will happen at Paddington - where the number of five/ten coach IEP services could be restricted by the need to accommodate some 332s with 1+1 seating).
Prestwick, Southampton, Luton and Birmingham seem good examples, where the Airport is just another station on the line - rather than needing something special for air passengers (where one "air" passenger seems to be more of a priority than several "other" passengers).
I also don't see the point in "
via Heathrow" services. Docklands/ Stratford/ City/ Paddington/ OOC to Heathrow makes sense. Heathrow to Slough/ Reading (and beyond) makes sense. But the time penalty for running
via Heathrow (and the mismatch between toiletless "metro" style 345s/ 1+1 seated 333s and the "more common or garden" units required for services between Heathrow and Slough/ Reading etc makes me wonder why you'd want to run services through Heathrow.
It makes sense to extend Gatwick "Express" services to the south coast, as that Airport is on the main line - so there's no time penalty. But you wouldn't want to divert Liverpool Street - Cambridge services via Stansted because the time penalty would be too much. Same goes for "via Heathrow" to me.
Just my opinion, but I'd rather that the (needed) services from Heathrow to Slough/ Reading/ beyond were independent of those from Heathrow to the big city.
All of which assumes Heathrow's cooperation on their track from Hayes and Harlington to Heathrow....
This is something often forgotten from the "my idea for..." threads!
It's an assumption that at some point the business case will stack up to run all 24tph from the peak core service westwards.
With 6tph West Drayton, 8tph WCML that leaves 10tph which could run to Heathrow. It may not be posssible to fit that all in so it could be 8tph for Heathrow (plus 4tph WRATH) and 8tph for West Drayton instead.
An 8/8/8 service might well be easier to timetable.
Do you honestly see 8th for the WCML in the medium/long term (rather than just covering the Tring services whilst Euston is remodelled for HS2 work)?
I think what will happen with HEX is that the national rail platforms will be placed in zone 6-9(probably zone 6 for consistency with LUL) as a planning consent condition of further expansion of the airport. This will be presented as a way of helping local residents and improving public transport access to Heathrow
Heathrow airport holdings will protest at this condition however. Will secretly be glad as it allows them to dispose of a liability while saving face
I suppose that relinquishing control over Hex could be a pawn to sacrifice in the bigger battle over another runway/ terminal at Heathrow - a small price to pay to avoid their airport losing out to Gatwick?
That's helpful. Looking at Heathrow's submission to the Airports Commission, it's long term strategy is
HeX 4tph, calling at Old Oak Common, Slough, Maidenhead, Twyford and Reading. At least 2tph continue to Oxford
2tph from Heathrow to Oxford via Reading?
On top of the...
- 2tph fast from Paddington to Oxford (fasts - some extending to Hereford etc)
- 2tph slow from Paddington to Oxford (the 166 services)
- 2tph XC services from Reading to Birmingham (variously serving Bournemouth/ Southampton/ Manchester/ Newcastle etc)
- Various freight paths
- (plus whatever Reading services run onto EW for Milton Keynes/ Bedford etc)?