The ideal mid-spot for West and East is the magic triangle formed between the A120, A12 and the Cressing Road.
That gives you:
Chapel, Coggeshall BS 25
WM 17
King Billy, Braintree BS 20
WM 23
Cross Keys, Notley BS 22
WM 20
and, no doubt, others.
The SH for me is the equivalent of the Totham Swan for Psyclist (and vice versa).