Horatio's father David — a surgeon at the centre — says the garden helped his family "focus on the positives".
"This has been a focus for myself, my wife, Horatio's brothers — it's allowed so many friends, family, supporters to focus on hopefully a legacy that will be there to honour his life," he said. "And I hope he would feel honoured and proud of the support that has been shown since he died."
This week the annual Bloomsbury Art Fair will raise money for Horatio's Garden and the Spinal Treatment Centre. Standard readers can take advantage of a two-for-one ticket offer for the event at bloomsbury-art-fair.com/advanced-tickets