Thanks Zom,
Good thought, will check.
Tried with a firm recommended by Sony for service spares, but seems they only do RCU and mains leads, and they're ridiculously expensive. Sony do however mention 3 accredited service agents in the Norwich area, but suspect if it isn't under guarantee £200+ would be reasonable for a SSB replacement. Thanks again - Chris.
PS - Its a thought that if its edge-lit there won't be so many screen smashes, as takes a good sized brick, where back-lit need just a touch from a two year old in a paddy.
In the event, folks couldn't be arsed to check any Guarantee as its Crimble, so bought another. Nice set though, think hang on to it 'till can sort a SSB on Ebay or get another one in with screen issues.