bp wrote:

There is no downpipe on that corner. The guttering at the top end
there. I will check next time it rains hard to see if it is leaking
or overflowing due to blockage etc.

Quite common to get blocked gutters at corners, so it could be overflowing
from there.



--
Dave
The Medway Handyman
www.medwayhandyman.co.uk
01634 717930
07850 597257