I have to buy lead for flashing a neighbours roof that I have changed
from mono ridge to abutment, and also for when I flash my roof. I
guess I need 240mm, about 12 metres length (6 for neighour, 6 for me).

Best prices I have found are (nearly half the prices of other sources)

http://www.blanchford.co.uk/acatalog/Lead_Flashing.html

But, any alternatives folks have tried ?

Can you get (much cheaper) soft aluminium flashing that can be dressed
into profiled roof tiles ?

Cheers,
Simon.