Update - no Flying Scotsman after all

The National Railway Museum posted this on Facebook late this afternoon:

'We're really sorry to announce that Flying Scotsman has suffered a mechanical problem and will not be able to haul today's run from York to London. The remainder of the run will be hauled by a diesel engine and all passengers have been informed.

We share your disappointment at this news, but unfortunately some problems are always possible when operating an engine of any type and age on the rail network. Our priority is now fixing the problem to ensure Scotsman is back in operation as soon as possible.'

Next steam through Harringay: this Sun 22 May about 0910: 'Lord Dowding' on an excursion to Matlock. More later.