Kings Langley surrendered their unbeaten record of 20 home league matches as Southall recorded a 2-0 victory at Gaywood Park.
Southall came with a competent defence, a midfield that contested everything and allowed Kings no time on the ball, and an interpassing attack that showed tremendous pace.
For all that, Kings adapted their game to a longer ball tactic and created more than their fair share of the chances,
Jack Johnson’s through-ball to Jimmy Armstrong brought a good save from Southall keeper Dominic Cassells and a snap shot from Adam Hallissey flew narrowly wide.
Southall’s first real chance came after 35 minutes when the lively Myles Hippolyte beat the offside trap and slotted the visitors into the lead.
Kings should have levelled minutes before the break when Hallissey made space at the far post to meet Ben Long’s perfect cross but he put his header past both keeper and post.
Little changed in the second half, and Tyrell Bentley delivered the killer blow for Southall with a calm lob over the exposed Ross Hampton.
Kings fashioned the majority of the chances but found Cassells excellently placed on every occasion – the epitome of which was a 20-yard volley from Long that flew straight into the keeper’s arms.
The home side forced a series of corners and Victor Baldav’s superb last-ditch tackle denied Johnson when through on goal, while an Armstrong effort was ruled offside, but Southall took their chances and deserved the win.