Paul,
You could give these two UK pacing analyser/programmer companies a try:
APC Cardiovascular Ltd. 18 Macon Court, Herald Drive, Crewe, Cheshire CW1 6EA. England
Tel: +44 (0)1270 216142 Fax: +44 (0)1270 216251
http://www.apc-cardiovascular.co.uk/ Vitatron U.K. Ltd.Unit 5, Westpoint Row, Great Park Road, Almondsbury Bristol BS324QG
Tel. : 01454 454900
Fax: 01454 454901
http://www.vitatron.com/physicians/index.htm?http://www.vitatron.com/physicians/nonus/3_5_programmers/3_5_1.htm
Regards,
Kam