From Sleaford, Yorkshire Trading bus to Newark, ALDI. 36 min £5. From Sleaford, Spar Shop line 27 bus to Grantham, Bus Station then bus to Newark, Bus Station. 2 h 4 min £5. From Sleaford taxi to Newark on Trent. 27 min £89. From Sleaford drive to Newark on Trent. 27 min £3.