Parents have been warned about their childrens' safety walking home alone in London after second attempted abduction was reported to police on the same day an 11-year-old was almost snatched.

Clare House Primary School in Beckenham sent out a letter saying a child had been approached by a hooded man in Kelsey Park who told him 'to go with him'.

The boy ran away and alerted the incident to his mother, who was nearby, and told her what had happened.

The abduction attempt on Friday came within minutes of another incident in which a Line of Duty actress said her own was approached by two men in a nearby park.

In both cases the men were seen driving around in a black van.

'It has been reported that a similar incident happened to one of our students in Kelsey Park on Friday at 16:30 BST,' the letter from Clare House reads according to the BBC.

The school added that the child was playing in the park with friends before being approached by the man, and that the individual was wearing a black hooded top and a mask.

Metropolitan Police have been approached for a comment and are understood to be aware of the incident.

It comes after the force apologised to Line of Duty star Sherise Blackman after she complained the force was failing to properly investigate the attempted abduction of her 11-year-old son.

Ms Blackman, who appeared as firearms officer Ruby Jones in the hit show, said her son was walking home from school in Beckenham when two men on the street and another man in a black car tried to grab him on Friday.

One of the men asked the boy if he 'wanted a lift' but he sensed danger and ran towards teenagers on a basketball court nearby for help.

He was able to make it home where his parents found him 'shaken' and they immediately called the police to report the incident.

But Ms Blackman said she felt as though officers were trying to 'fob it off' when they took a statement from her son and that no suspects have been identified.

The actress added that she was 'very dissatisfied' with the line of questioning being aimed at her son's 'beef' with other children at school rather than the possible abductors.

The Met has since apologised, with Superintendent Andy Brittain, from the South Area BCU, saying: 'I fully acknowledge our initial response was not sufficient given the extremely worrying circumstances of this incident.

'The matter was reviewed and detectives are carrying out further investigation which remains ongoing.

'I want to reassure the boy’s parents and the wider community that this incident is being fully investigated to establish the full circumstances of what happened.'

No arrested have been made, and the only details of the suspects are that one is a white 5ft 10in tall male and the other is around 6ft.

Ms Blackman had recently starred in the BBC drama Line of Duty, where she appeared as a police officer who is dramatically shot dead as she defended a police convoy from masked hitmen.

Yesterday she asked for help finding the suspects who allegedly followed her son into a basketball court before teenagers stepped in to protect him.

Ms Blackman told the Standard: 'He did say ''I'm going home'' and the man then said ''hop in, I'll give you a ride'' at which point my son was like that's not normal and he kind of started to hop foot it away.

'The two men then followed him into the tennis court and said to the teenage boys ''oh he's with us'' at which point he [Ms Blackman's son] said ''I don't know them''.'

As soon as he arrived home, Ms Blackman's son told his parents what had happened.