I doubt it. Seems most PZ-PAdd services going to be 5 or 10 car meaning crampt condition on a 5 car, or on a ten car, double crews / half of train only, able to use restaraunt etc.
9 cars seem to be reserved mainly for Cotswold route , stoppers etc...
I think this obsession with portion working on the WofE route may come back to bite us on the arse, after all virgin crosscountry originally promised its Voyagers would generally operate in pairs! That lasted all of about a year!
Well Virgin’s so called ‘Operation Princess’ got it completely wrong. They failed to foresee the massive rise in passengers caused when the Voyager fleet started running. Now, I am wondering whether the GWR have also got things wrong? Why for example, are 9 coach trains planned for the north Cotswold line through to Worcester & Hereford? I would have thought that 5 coach trains would have been suitable with another 5 coaches being added at Oxford.
The DfT inspired 'IEP' fleet will go nowhere near Penzance - some might reach Exeter or Torbay at most in scheduled operation. The 'IEP' 9 car trains are for the Bristol and South Wales services and the five car units are intended for the Evesham - Worcester route and the intensified service to Cheltenham via Swindon as well as the extra non-stop Bristol - Paddington trains. In peak hours the Worcester trains will, at a minimum, run as 10 coach trains to Oxford.
The additional trains ordered for GWR by Eversholt will be used through to Plymouth and Penzance. Apart from general broad statements I am not aware of any publicly available information about the details of their diagrams.
Having been away for a while, nothing much seems to have changed, with the usual myths still being recycled.
Five-car Paddington to Penzance services? West of Plymouth perhaps, where much of the time five cars will be perfectly adequate (same as portion working with loco-hauled stock was under BR and the GWR west of Plymouth for many years) - and there will be more London-Cornwall services and Cornish main line regional services to boot - but why do you think it will be so hard to roster nine-car 802s on the trains where a bit more capacity will be needed, or for the Pullman services? The Pullmans already require extra attention to diagram HSTs with the right kitchens.
Mark Hopwood has said several times that all GWR peak trains into Paddington in the mornings and out in the evenings will be nine-car or 2x5 car 800s and 802s. Don't you believe him? They might also have worked out summer Saturdays can get a bit busy.
And what's the issue with double crewing where needed? XC and Virgin cope somehow and the RMT surely won't object to lots of people being employed.
Sorry but Operation Princess never promised lots of doubled-up Voyagers - quite the reverse - and even with various routes being cut, we didn't see that many more pairs of Voyagers out there.
RE use of nine-car stock on the Cotswold Line, this will most certainly be happening, especially in the peaks. Basically half the fasts between London and Oxford run to and from the Cotswold Line over the course of the day, with some stock diagrams mixing London-Oxford turns with duties to Worcester or Hereford. The second batch of seven nine-car 802s was ordered specifically for the Oxford (and Cotswold) route and peak services on the Berks & Hants. At least one of the first batch of nine-car 802s was also initially planned to help cover Cotswold Line peak duties.
As things stand, a number of HST services arrive at Oxford in the mornings from the Cotswolds and leave in the other direction in the evenings full up (and standing on some days too, try the 17.22 off Paddington on a Friday). Signal positions at a couple of stations also rule out - unless the signals are moved and there's no sign of that so far - the use of 2x5 formations, as you can't get part of both trains on the short platforms.
The service is most likely to see Cotswold peak HSTs swapped for nine-car 802s, with the current 180 and 165/6 duties and off-peak HSTs replaced by five-car 800s, dropping/adding another set at Oxford when required. Five-car 800s will also appear on off-peak Paddington-Bedwyn services, once the Bedwyn reversing siding is extended.