There was also a period when Greening took over the weekday lunchtime show whilst regular presenter Jo Whiley was away on maternity leave.

From late 2001 into 2002, 102.2 Jazz FM employed him for various slots, then in May 2002, he briefly joined London's Heart 106.2 presenting their 2-6 pm weekend afternoon show.

In June 2002, he joined London's Rock station XFM, sitting in for Christian O'Connell on the Breakfast Show.

From 26 March 2007, he moved to a 1 – 4 pm weekday afternoon slot on the relaunched 102.2 Smooth Radio where he built up a cult following.

His "game with no name" quiz show, in which listeners had to suggest the most suitable song to play against a particular news item, was particularly popular.

[6] Greening was openly gay[5] and had a previous long-term relationship with Andy Lowe, whom he often referred to on air as his "lesbian life-partner" or "live-in chum".

On 3 January 2008, it was revealed following the post-mortem that Greening died of a heart attack after taking large quantities of cocaine, ecstasy and GHB.

[9] He had spent part of the night prior to his death at the Recon event[10] held at The Arches nightclub in Southwark, London.

Greening was buried on 18 January 2008 in a woodland burial ground after a secular humanist farewell ceremony in accordance with his wishes.