(12 Sep 2020, 6:23 pm)peter wrote On paper, the X93 journey should be a B9 as this operates to/from Whitby, while the two X94 journeys would be operated by B7TL's or something else as they start/finish at Middlesbrough and hence are operated by Redcar. 

In reality this is not the case, as Whitby is an outstation of Redcar it seems to be a lot more fluid. For example last week (excluding Tuesday where trackers weren't working in the morning) the 8:50 was run by a B9 3 days and a B7 one day, and the 9:50 was also run by a B9 3 days but also a Pulsar one day. Whereas the 9.20 was only run by a B9 2 days, a B7 the other day and a Temsa the other. So it'll probably be a case of being lucky as to what turns up on the day!

(12 Sep 2020, 6:42 pm)tyresmoke wrote When I did 4 days on the 18 last week it connected with the 0750 X94 in Guisborough from Middlesbrough on the school holiday times, and three days out of four that was a B9, the other being a B7, and that's a Redcar bus. Pulsars have been used a fair bit on the 0850 and 0950 in recent weeks. 0920 pretty much nailed on a decker but often 7424 can appear on that one.

Thank you both for preparing me that the B9TL is not guaranteed on any specific journey.  I admit I did not allow for Whitby being an outstation to Redcar.  Fortunately, allowing for onward connections by East Yorkshire buses, I can afford to leave Middlesbrough by 10.20 at the latest.  So, I intend to aim for the 8.50 on the basis of a potential wait but a likely (though not certain) opportunity to ride a B9TL in the end.  I am certainly ignoring the X4 now.

Thank you @Kuyoyo for your report too. Sorry I've only just spotted it.