Forest should have taken the lead in the fourth minute, when Knockaert picked out an unmarked Murray a few yards out, but the striker was denied as Sluga dived to his left to make an awkward save.

Knockaert himself then headed over and Filip Krovinovic lashed a powerful shot wide as the home side made a lively start.

Murray headed another opportunity wide, before Cyrus Christie was also wayward with a low shot.

Forest continued to pressure and a clever free-kick from Knockaert saw him feed Joe Lolley, who saw Sluga make another sharp save to keep out his driven effort. The keeper made rather easier work of the follow-up from Cafu.

Knockaert followed up a driving run with an enticing delivery, but Murray could not quite keep his effort on target as he stretched to connect a few yards out. The striker looked frustrated not to have scored.

Christie then forced some more nervy defending from Luton with a whipped in cross, but it was cleared before Murray could connect. From the resulting corner, Knockaert shot wide.

By half-time Forest had mustered 13 efforts on goal but had hit the target with only three, which let Luton off the hook.

The story resumed after the break, with Garner and Cafu both wayward with shots from range.

Sluga then conjured up another big save to keep out Garner as he drove in a shot from 12 yards which seemed bound for the bottom corner.

Luton then delivered a warning shot as Elijah Adebayo almost scored with Luton's first clear opening, with Brice Samba holding his shot gratefully.

The significance of Forest's missed chances was rammed home when Luton took the lead in the 64th minute. Pelly-Ruddock Mpanzu crossed from wide on the left and Tunnicliffe applied the finish.

Jordan Clark was only a foot away from making it 2-0 with a low effort as Luton found their confidence.

Murray fired in a great low ball for Taylor, but Sluga pounced on it bravely, while Cafu had a wild shot but Forest could not find a way back.