THE use of CCTV evidence was vital in proving that Roger Kearney was at the scene of the murder.
He told police he left his home in Painswick Close, Sarisbury Green, after 10pm on the night Mrs Poolton was murdered which would have meant he did not have time to kill her.
But a camera at the nearby Sarisbury Green Social Club caught him leaving his home at 9.30pm in his Mitsubishi Shogun Sport.
Kearney denied that the car seen on the film was his and insisted his was another, shown on CCTV at 10.20pm.
But if that had been true it would have meant Kearney would have driven a distance of 1.06 miles, to Swanwick Marina where he was caught on CCTV again, in just seven seconds.
That would have meant he had driven at 545mph, the jury was told.
CCTV also showed Mrs Poolton's black Peugeot 206 pass Swanwick Marina and Harrington's Fish Bar, near Swanwick railway station, shortly before she was killed.
CCTV also showed Kearney was late for work and he had avoided using his swipe card to get into the Royal Mail depot at Eastleigh to hide the fact he was late.
Prosecutor Nicholas Haggan QC told the jury that the CCTV images showed Kearney had lied to the police to cover his tracks.
Mr Haggan said: 'Analysis of the defendant's account to the police revealed that he had lied about every significant aspect of his movements during the crucial time between about 9.30pm and 10.45pm on Friday, October 17.'
The police spent hours studying the CCTV and Matthew Cass, an expert in identifying vehicles on CCTV, was brought in to help.
Detective Chief Inspector Darren O'Callaghan, from the major crime team, said: 'It is a case that has had its challenges. Evidence has been drawn together from lots of sources and it was a complex case for the jury to consider.'