RANDY posties were caught by a shocked mum as they steamed up their rocking van in a raunchy clinch.
Cleaner Charlene Joyce, 39, spotted the Royal Mail workers taking a break from their deliveries in a busy car park — with the woman’s head “bobbing up and down”.
The enthusiastic pair — both in postie uniforms — could be seen by passers-by including school children, pensioners and customers on their way to a nearby Aldi store as they romped at around 9am.
In a video clip filmed by Charlene, a female worker is seen leaning over her male colleague’s lap.
She then sits back upright, flipping her hair out of her face, while the man leans his head back.
Charlene said: “I was on the phone to my sister and I looked across and I could just see a woman’s head bobbing up and down. I said to my sister, ‘I think there’s something rude going on in the Royal Mail van’. It was obvious what they were doing.
“She said film it because they shouldn’t be doing it in a work van.
“They were really going for it. She was very enthusiastic to say the least. Ten minutes afterwards the they were both just delivering parcels like nothing had happened.
“I just hope they anti-bacced before touching everyone’s parcels.”
Royal Mail has yet to comment on the incident in South Benfleet, Essex.