All,
I noticed that my bike was leaning over a bit on the old sidestand and decided that this weekend I would have a look at it.
I do not have a centre stand on the old Cafe Racer, so I started by trying to remove the exhaust system on the bike to gain access to the side stand fixings with a view removal and inspection.
Oh dear, as I was leaning over the bike, using the exhaust nut spanner on the head nuts, the side stand collapsed and over went the bike.

It did not go straight down on the floor but got itself entangled with my son's pushbike that was leant against the wall.
One of the tangs on the sidstand had failed due to fatigue. The final pressure of me removing the exhaust nut was enough to finish the job. Looking at the break area it looks like a crack had developed some time ago, as more than half the width of the metal was discoloured due to corrosion.
The damage, other than the stand? A tank repair and a new paintjob. I have a large dent in the left side/rear of the fuel tank where a pushbike pedal came into contact with the tank

I have just ordered a surefoot, as I will not replace the existing sidestand.
The moral of the story...If you notice that the bike is leaning over slightly more that usual, do not put off investigating it! And put it up on a box before you start.
Original stand has been in use for 29 years and 110000 miles so can't be too disparaging. The last 4 or 5 it has been the only stand.
cheers
Steve