Morton holds a yearly street fair, and in past years they have organised trips up the tower. I went up in 2008 and was rewarded with some very fine views out over the fields. Given its close proximity, the church at neighbouring Hacconby, just a mile away over the fields, was easily visible. Another church spire was also discernible and I think that this might have been the tower at Dunsby.
Well worth a visit id you are in the area.The church of St John The Baptist is normally open to visitors throughout the day.