TV & radio guide - Wednesday

Memories Are Made of These (11.00 am R4). Involuntary recollection.
Thinking Allowed (4.00 R4). Laurie Taylor talks with the LSE's Richard Freeman about British trade unionism and its recent resurgence.
» Tomorrow's World (7.00 BBC1). Return of new inventions series features an intravenous drip monitor and a new system for evacuating trains after a crash.
» The Money Programme : Smoke Rings (7.30 BBC2). Tobacco smuggling in Britain.
The Disease Detectives (9.00 R4). More on epidemiology and its interaction with public policy.
» Night Waves (9.30 R3). Niall Ferguson talks about his latest book on money and power in the last 300 years.
Kirsty MacColl's Cuba (10.00 R2). Part three: from Castro's revolution to the 1962 missile crisis.
Siege (10.35 ITV). The experience of armed siege.