(11 Mar 2016, 7:12 pm)Andreos1 wrote No idea what type of 'zone' it was, but it had Hartlepool on the side (so I am guessing it should have been on a 36).
Either way it was on a 37.
Rare?
36/37/38 all interwork so no, not rare (plus all the 'Zone' Enviros have 'Middlesbrough-Hartlepool' and 'Middlesbrough-Norton' branding on the side)