The younger generation is forever lectured about how today’s teens are harder-drinking, worse-behaved and altogether less helpful than their parents.

But not this lad.

Callum Hall, 18, is a model citizen who spends days every week at his grandparents’ house, carrying out every conceivable chore and generally making himself useful.

He said: “I don’t really know why I do it.

“I love my nan and I love helping her out.

“When she laughs it feels like it is all worthwhile.

“They are really happy to see me.

“They enjoy my company.”

Callum, who lives in New Malden, has autism.

He visits nan Lesley Broadfield and grandad Raymond every week to help with shopping, gardening, washing and more.

Since Mrs Broadfield was diagnosed with motor neurone disease he has stepped up, with his grandparents’ thanks for a reward – plus the occasional trip to Butlins.

The family will visit the resort, in Bognor Regis, again this weekend.

Callum said: “We have been loads of times – it’s great.

“It’s lovely being by the sea and my nan likes it as well.”

Your Local Guardian:

Callum has stepped up to help his nan since she was diagnosed with motor neurone disease

Proud mum Tracy Hall, 43, said: “What he does for his nan is unbelievable – he’s got his own problems to deal with.

“Nothing is too much for him to do. He’s just absolutely amazing.

“Anything you ask Callum to do he will do.

“Every Saturday he takes his nan to the High Street in her wheelchair so she can get out.

“And when my mum goes for a treat of a pedicure Callum will sit and wait for her to take her back home.

“I know he is my son but he is the most amazing lad you could meet.

“He finds it very hard to cope with his autism but still does anything for his grandparents.”

* Do you know an unsung hero? Call the newsdesk on 020 8722 6313 or email jon.sharman@london.newsquest.co.uk.