well heres 10 that I can run off the top of my head that a HSE could fire out.
1, no helmet
2, no harness
3, over extended ladder (weakens the safe working load)
4, resting on a gutter
5, standing on toes to over reach upwards
6, ladder base is on soft ground
7, no "at work" signs
8, working sideways on a ladder
9, ladder base is resting on unsafe land (land supported by an old stone wall only)
10, freind more interested in taking pics than footing ladder.
bear in mind that usually it is when you have several contributing factors comming together that accidents happen and I think it is safe to say that under current laws you would have probably been closed down if this had been spotted by a HSE.
I know I am new, and that sounds harsh, but it is what I can see. If I was a HSE I would have no problem at all serving you with a stop trading notice. I would lose very little sleep over it. I would feel like I had just saved a life.
That picture is probably all the evidence they need to justify clamping down on you too. I wouldn't have posted it.
PS, looking at the actual house, I would say it was meant for standoffs, those bits of wood underneath the gutter look perfect for preventing sideways movment and turns it into a much safer job if they are used.