Allardyce along with Pompey boss Harry Redknapp were the subject of last week's documentary which broadcast three agents admitting the Bolton manager was open to corruption.

The result proved to be a less than fitting end for departing Pompey chairman Milan Mandaric who was given a heroes send-off by the Fratton Park crowd but couldn't match his farewell with three points and a return to the top of the Premiership.

Redknapp was given the luxury of fielding an unchanged starting line-up from the team that beat Charlton last weekend.

Lomana Lualua was forced to resume his place on the bench despite netting the winner at The Valley.

Allardyce swapped Greek international Stelios for Kevin Davies from their last league game against Middlesbrough and Nicky Hunt came into the back four with Tal Ben Haim pushing out to an unfamiliar role at left-back.

Unlikely Premiership pacesetters Pompey began the strongest as first Sol Campbell went close with a header from a Matt Taylor corner then Kanu and Benjani combined to put Sean Davis through but his attempt rebounded back off the far post.

Jussi Jaaskelainen was called into service again on 14 minutes when Kanu's stabbed effort from the edge of the area was beaten away by the Finnish international and he was then at full stretch to keep out Taylor's side footed volley following Gary O'Neil's run and cross.

Just as soon as they looked to be edging ahead Pompey fell behind.

Ben Haim's lofted free kick was headed away by Linvoy Primus but only as far as Nolan, unmarked on the edge of the penalty area.

The Bolton skipped looked up and despatched a sweeping volley into the far corner which was too good for David James and signalled the first goal Harry Redknapp's men have conceded in the Premiership for 472 minutes.

Further chances fell to Dejan Stefanovic and Davis again but Jaaskelainen denied them on both occasions as frustration around Fratton Park grew.

Bolton nearly stole a second when Nicolas Anelka beat Campbell to the ball and from an innocuous looking angle had James stretching to deflect his effort skyward.

The Pompey keeper then had to scramble across his goal to stop the ball spinning in at the far post.

Benjani, despite his recent good form, should have hauled the home side back in to the game when he out muscled Abdoulaye Meite and had a clear run on goal.

The Zimbabwean was given the time to pick his spot but instead opted for power and blasted his effort into the stand behind Jaaskelainen.

Lualua was introduced on 57 minutes in the hope of injecting some wizardry into the Pompey frontline but Bolton could, and should put the result beyond their grasp when Kevin Nolan was again unwittingly set up by Primus.

Ivan Campo's long throw was headed across the six yard box by the defender and Nolan stole a march on the ball-watching defence only to blast well over from close range.

Pompey piled forward looking for the elusive equaliser but despite Glen Johnson's long range effort struggled to break down a typically resolute Bolton as the away side held firm for the win.