1403 is currently parked at Thorntons, to be converted to a Driver Training vehicle:

Arriva North East: 1403 / NK53HHZ by Daniel Graham, on Flickr

Thought it had been scrapped due to a chassis problem. Along with 1401/2 these seemed to get better with age. 1401 is the only bus at Blyth depot capable of doing 60mph.

(20 Feb 2021, 9:07 am)Dan wrote 1403 is currently parked at Thorntons, to be converted to a Driver Training vehicle:

Arriva North East: 1403 / NK53HHZ by Daniel Graham, on Flickr

Thanks God for that

Saw a HGVTV vehicle on the A19 today. With what looked like a load of people in Arriva Hi Viz vest. Any idea? https://www.hgvt.co.uk/training-centre-locations/

(Yesterday, 5:49 pm)Andreos1 wrote Saw a HGVTV vehicle on the A19 today. With what looked like a load of people in Arriva Hi Viz vest. Any idea? https://www.hgvt.co.uk/training-centre-locations/

HGVT have been providing extra training buses and instructors to Arriva for a couple of years now.

Is that the London Enviro 400. still with TFL logo on side? Saw that in Cramlington on Tues.

(Yesterday, 8:06 pm)Arriva7446 wrote Is that the London Enviro 400. still with TFL logo on side? Saw that in Cramlington on Tues.

The one I saw was a single decker. 
E200 or 300 from memory.

Yeah they’ve been using an E200 and E400 at Ashington for a while now helping with extra capacity. Similarly Stanley Travel are often working out of Stockton depot for extra training capacity there too.