Do both Coventry Cathedral and Newcastle Cathedral seat a bishop for their respective diocese?
Coventry Cathedral: The Cathedral Church of St Michael, commonly known as Coventry Cathedral, is the seat of the Bishop of Coventry and the Diocese of Coventry, in Coventry, West Midlands, England. Newcastle Cathedral:  It is the seat of the Bishop of Newcastle and is the mother church of the Diocese of Newcastle, the most northerly diocese of the Anglican Church in England, which reaches from the River Tyne as far north as Berwick-upon-Tweed and as far west as Alston in Cumbria.
yes