George Sorocold, Derby Water Engineer
Record Elm Water Pipes in Derby page 108
....Continuation:
13 Market Place
15 The Morlidge
16 St Michael's Lane
17 Nany Tags Lane
Continued.....

See St Michaels Lane - there is a 4 1/2 inch bore pipe.

from an article about George Sorocold of Derby - By F Williamson, F.R.Hist.S.