The culture secretary Jeremy Wright MP revealed his love of Lego to Julia Hartley-Brewer, adding that a 4,500 piece Lego Death Star was the largest thing he had built from the interlocking plastic bricks.
Appearing on the breakfast show, Mr Wright said he uses Lego to unwind after a stressful day at work, and had amassed a "very large" collection.
"It's very large indeed [Lego collection], by wife would say far too large, but I find Lego therapeutic," he told Julia Hartley-Brewer.
"I think everybody who does any difficult or stressful job needs a way to switch off. We all have different ways, mine is lego. And actually in my view it's a great way of putting your brain into neutral."
The politician added that "putting Lego together and taking it apart again" was a "therapeutic process", but confessed he didn't have the space to display his full collection.
'I haven't got the space to display it'
"Most of it's in boxes, I haven't got the space to display it.
"The engineering capabilities of those who build and design lego is quite amazing
"People of all ages, even my age, have enjoyed it for many years and will enjoy it for many years to come."