Great Western Coffee Shop

I'd be very grateful if someone could tell me which journeys are now regularly operated by class 180 trains.

7:34 from Didcot Parkway and 9:01 from Oxford to Paddington

There are four diagrams, Mondays-Fridays only. Any service with a 5xxx or 3xxx headcode are ECS movements, not passenger services.

5W10   0434   Old Oak Common   London Paddington   0504
1W10   0545   London Paddington   Worcester Foregate Street   0816
1P35   0826   Worcester Foregate Street   London Paddington   1100
1W29   1120   London Paddington   Great Malvern   1356
5P57   1400   Great Malvern   Great Malvern   1421
1P57   1426   Great Malvern   London Paddington   1700
1D53   1718   London Paddington   Oxford   1845
5D53   1843   Oxford   Oxford Down Carriage Sidings   1845
5P75   1925   Oxford Down Carriage Sidings   Oxford   1927
1P75   1931   Oxford   London Paddington   2030
5P75   2040   London Paddington   Old Oak Common   2101

5W10   0434   Old Oak Common   London Paddington   0504
3A05   0614   London Paddington   Didcot Parkway   0730
1A05   0734   Didcot Parkway   London Paddington   0816
1W21   0921   London Paddington   Worcester Foregate Street   1141
1P47   1206   Worcester Foregate Street   London Paddington   1430
1W47   1552   London Paddington   Worcester Shrub Hill   1809
5P77   1812   Worcester Shrub Hill   Worcester Foregate Street   1840
1P77   1849   Worcester Foregate Street   London Paddington   2059
5P77   2122   London Paddington   Old Oak Common   2201

5P01   0413   Old Oak Common   London Paddington   0426
3R01   0500   London Paddington   Reading   0534
1P01   0559   Reading   London Paddington   0636
1W12   0648   London Paddington   Great Malvern   0932
5P40   0932   Great Malvern   Great Malvern   0943
1P40   0954   Great Malvern   London Paddington   1230
1W41   1421   London Paddington   Worcester Foregate Street   1644
5P73   1649   Worcester Foregate Street   Worcester Foregate Street   1716
1P73   1728   Worcester Foregate Street   London Paddington   2006
5P75   2040   London Paddington   Old Oak Common   2101

5P01   0413   Old Oak Common   London Paddington   0426
3K23   0446   London Paddington   Newbury   0551
1K23   0609   Newbury   London Paddington   0712
1D13   0721   London Paddington   Oxford   0819
5D13   0820   Oxford   Oxford Down Carriage Sidings   0822
5P27   0854   Oxford Down Carriage Sidings   Oxford   0856
1P27   0901   Oxford   London Paddington   1008
5P27   1022   London Paddington   Old Oak Common   1039
5W32   1135   Old Oak Common   London Paddington   1153
1W32   1221   London Paddington   Great Malvern   1511
5Y94   1513   Great Malvern   Great Malvern   1530
2Y94   1532   Great Malvern   Didcot Parkway   1703
2E95   1715   Didcot Parkway   Great Malvern   1925
5P83   1927   Great Malvern   Great Malvern   1937
1P83   1944   Great Malvern   London Paddington   2241
5P83   2251   London Paddington   Old Oak Common   2311

No changes since last timetable, except the 07:34 Didcot to Paddington fast has replaced the 04:57 Paddington to Oxford and 07:21 Oxford to Paddington slow services.  This completes the removal of 180s from stopping trains, for which they weren't really suited due to the external door layout - with the exception of the evening 'Halts' Cotswold Line service, and arguably the 17:18 PAD-OXF semi-fast.

Also the 18:49 from Worcester has been speeded up and is now the 20:01 departure from OXF vs 20:31 as previous was.

Yes, that was mainly achieved by timing the service for a 180 rather than an HST, which was previously used on the service. A couple of minutes improvement at most stops on the Cotswold line plus the removal of a long dwell at one station (I can't remember which now) allowed it to arrive at Oxford around 30 minutes earlier.

Mainly achieved by the removal of some 13 minutes dwell time?

The 13 minutes of dwell time removed at Moreton-in-Marsh helped but the removal of a minute or two at every stop, possible as the service is now timed for a 180 rather than an HST, is just as important. You could have removed the 13 minute dwell if the service was still timed for an HST but it still wouldn't have made it possible to arrive at London 30 minutes earlier.

It regularly used to sit at Oxford for ten minutes or so as well.

My understanding is that in some cases increased dwell times on Up trains on the Cotswold Line is because FGW does not want them arriving at Oxford at times when Oxford station is particularly busy. I have found it frustrating to be stuck for 10 minutes or so at Moreton or Charlbury when I would be getting off at Hanborough, (before the Oxford trouble spot). Just another reason for the substantial redevelopment of Oxford station so that it can cope better with the higher number of trains using it (compared with some years ago) and scheduled to rise even more in the not too distant future.