Bit late, but here are my notes from a trip earlier today:
26/1/26 1035 Sheff-StP
In Coach B, six tables (less in other coaches. 810010. Aircon or something a bit of a constant drone at first but far less noticeable on the move. Engines started 1027. Far less engine noise and vibration than on a 222, both stationary and on the move. Seats firm but comfortable. Nice and warm on a cold day. Table seat - good window alignment, but charging points hard to see and my 3-pin worked but USB didn't (same with the one opposite). Charging stopped when we changed to electric by Kilby Bridge then came back about 5 mins later. Still no USB power on electric.
First trolley appearance N of Leicester. Back through S of Bedford, some trouble with the water he said. Filter coffee bag: coffee OK but nothing special, hot enough.
Not very full, less than a quarter leaving Sheff. And still loads of free pairs of seats from Leic.
Wifi needs an email address but a fake one works - got 3Mb/s nr Chesterfield.
GPS worked fine. I checked and got a steady ~110mph N of Ambergate and at Duffield. The train didn't actually *feel* that fast at those points, and the ride was pretty good all the way I thought.
810012 was stabled outside Derby.
The accessible loo in first class was displaying "out of order" as I passed it at StP. Didn't check the other loos.
Timings (to nearest 5 secs): Nothing ahead of us according to Traksy until Cricklewood area, so a pretty clear run. Dep Sheffield 1035:20, Dore S Jn 1041:45 (due 1039:30); Chesterfield 1047:55-1049:15 (due 1046-1047:30); Derby 1106:25-1108:10 (due 1106-08), using up the 2mins of padding in the schedule; EM Parkway 1117:15 (due 1117:30) but 2 mins padding at Spondon; Leicester 1129:30-1133:05 (due 1131-33) after 1.5 mins padding at Loughboro; Kettering 1151:20 (due 1151); Wellingboro 1155:30 (due 1155); ~110mph over Sharnbrook summit; Bedford 1203:50 (due 1204:30) after 1 min padding; St Albans 1219:59 (due 1222); Cricklewood 1228:10 (due 1229:30), briefly slowing for a Thameslink crossing to slow lines ahead.
StP stopped just outside at 1234:05-1237:25 to allow the 1232 and 1235 departures, and arrived 1239:35 (due 1239).