I just think HR wanted a bit of attention, and to engage with MG. He had to walk back the bit of his supposed account where he saw the woman being bundled into a car. That didn't happen. If he'd also had to walk back the bit where he saw someone at 1pm rather than 3pm, that's the end of his little spell centre stage, because if all he saw was SF and MG, then he saw nothing.
The bit where she's bundled into a vehicle isn't true, and nor is the bit where she came out of the house, because she never went in it. The detail that Kipper's 25-30 is also untrue because he later said the 44yo diamond dealer was the dead spit of Mr Kipper. So that's three inaccuracies / fabrications / untruths. Giving the wrong time is just #4.
Nobody came forward with further sightings after the press conference. The later claimed sightings were over a week later and all repeated what the first TV reconstruction showed, including the bit where SJL is shown leaving the house, which didn't happen. The CW reconstruction had the same result: more confirmatory sightings of Mr Kipper, as seen on TV.
So Mr Kipper was a smart, scruffy man aged 25 to 30 in his mid-40s, with a slim, chubby build and two noses, one broken and one not, carrying and not carrying a bottle, who was too short to have driven the Fiesta.