It failed...

...on a track rod end! There were a few advisories as well.

The OSF brake disc was slightly pitted
OSR brake pipe slightly corroded (cleaned up by the tester and is OK)
Both outer sills corroded but not excessive
The front brakes imbalanced but just within the limit (caused by the pitted disc according to the tester)

I've ordered a pair of track rod ends from Champion and I'll be able to deal with the advisories. The sills will be wirebrushed, rust treated (got some rust killing primer), and then topcoated. I'll waxoyl the sills to stop the rust in it's tracks. A pair of new brake discs will be fitted to deal with the brakes. A nice easy winter project. Before I took Blue in for the MoT I replaced the rear tyres as they were on the car when I got it and due to the 13 year lay-up they must have been at least 15 years old and therefore overdue for replacment. One of them looked like it had been on since the car rolled off the production line and the tread looked like it was worn to the limit. £70 for the pair is a small price to pay for total piece of mind and was one thing less to fail the MoT on. I forgot to mention that I'd fitted a replacement front bumper yesterday. The Acclaim Guru (Barry) had kept it for me and when I was fitting it I decided to clean up the front valence and gave it a couple of coats of rust killing primer. Once the primer has hardened I can topcoat it. I'll be doing the same thing with the outer sills. The only problem was when I came to remove the headlamp washer jets from the old bumper the threads had sheared. The Guru has a couple in stock but he's on holiday at the moment.