I have no complaints with BES copper tube which is:
BS 2871 : Part 1 : Table X (EN 1057 half hard). Kitemarked.
However I could do with some soon, and ToolStation have a slight discount. Theirs is:
BS EN1057 2006 R250
Is that the same or crappier quality? I have a vague memory of quality issues mentioned on here some while back...
Cheers
Tim