In reply to Blunderbuss:
Summit? If you mean the footpath from 051063 at 492m parking on Friday should be ok. This route to Black Hill unless its changed very recently has some sections that can be quite boggy (near the start). If your children are young then the route from Wessenden Head is easy and suitable for very young children. Plenty of parking on the A635 and just down the road leading to West Nab/Meltham. There are 2 rivers to cross initially but not normally a problem. The path starts about 100 m west of the junction.