This bit about hiding his body made me shiver...
"They thought they’d find Steven — or his remains — and of course they didn’t. And they won’t: not because we’ve hidden his body well
but because we didn’t kill our son"
"Charles had said it was about time Steven paid for his own ticket. Steven, being tight,
wouldn’t. He decided not to go. We regret that now."
"If he came up the path now I think I’d give him a good slap,
then a big hug"
...Earlier in the interview, they said that Steven hadn't been able to find a job, yet they describe him as "tight"when unable to go to the football. In fact all the way through the interview they use very negative terms about him, but they are very concerned about the state of the garden.
The reporter says..."When I get in touch to arrange this interview, they talk about how they are enjoying a bottle of champagne to toast the news that they will not be charged"