Can't be, Olly lives in NYC with her girlfriend. And Olly is originally from Australia, so it's not like she has a London family home Tess can stay at.
As mentioned above, if she was first class she'd have had a pod to herself with a lie down bed. If she had a first class pod, I have no doubt she'd have been flexing in the pod and her infotainment system, her swag (PJs, slippers, toiletries, full meals, free booze, etc. If she was in business, she'd still have been given a fairly comfy seat that extends all the way back with lots of room around her, free champagne and good food and goodie bags and such. Since she didn't show off any swag, I doubt she was in either business or first.
As for WTF she's doing there, she's visiting a tattoo artist in Herefordshire. For those who don't know, this is a place in the west midlands ages away from London.
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