Thanks both, things just got worse!!!

I am using a borrowed alternator as mentioned. Charge light staying off. Disconnected battery and pulled clocks out and refitted them - just to test the connections. Restarted car and now she wont rev above as guessed 3-4 K and 'doesn't quite sound right', a little lumpy. Might just be my paranoia though as rarely run her in a confined space like the run I am working in.

Off to get some spare clocks now... will check the back too tabs.

Thanks guys,

Andy