Hereford are out of this season's FA Cup after falling to a 3-0 defeat against Hemel Hempstead Town.
Hereford twice hit the crossbar with shots during the third qualifying round replay, but a bizarre indirect free kick on the edge of the six-yard box saw the visitors take the lead through Millar Matthews-Lewis.
Then two goals in seven minutes of injury time from Wilkinson and Williams condemned the Bulls to a 3-0 defeat against a side who created few chances throughout the evening.