I found a whole rack of these at ASDA today (five shelf worth at least) and for the record they work 100% with the 16GB 1st Gen Ipod Touch.
Go wireless. Eliminate the frustration of tangled wires and let the music play. This handy kit includes the TMR-BT8iP wireless transmitter and the foldable DR-BT22 Bluetooth® headset for your listening pleasure. You can even use the headphones for handsfree talking when you receive a phone call on your compatible mobile phone.
Enjoy wireless music with iPod and Bluetooth receiver
Operate basic functions of iPod remotely from BT headset which has VRCP capability Hands-free talking when you receive a phone call
Operate basic functions of Bluetooth mobile phone
Folding mechanism for easy portability
Battery life: 11 hours
Standby: 100 hours