The link below asking for job applications for pilots for West Atlantic states that all pilots are based at Coventry:
Boeing 737 and 767 Job in Coventry Airport - AA737767 | Aviation Job Search
Not that I am reading anything into that. The Freight Dogs section refers to the possibility of a UPS contract being up for renewal, so maybe the 767 will be off to EMA, if indeed it is for the UK arm of West Atlantic