“On the 22nd September, our world blew apart, the damage caused to it totally irreparable.

Archie was, and always will remain our everything.

Archie was the most extraordinary magical human being we have ever met,” she wrote.

Archie Lyndhurst

Archie Lyndhurst.Credit: Joe Maher/FilmMagic

“He died from an Intracerebral Haemorrhage because of Acute Lymphoblastic Lymphoma/Leukaemia.

The results utterly floored us to think something like this could happen.

Life is fragile, precious and sometimes incredibly cruel.”

Archie Lyndhurst

Nicholas Lyndhurst and his son Archie Lyndhurst.Dave Benett/WireImage

We will celebrate you always.

All our love."