@georgeob1,
georgeob1 wrote: far left agenda of the Labor party
Only in 1995, under the leadership of Tony Blair, a new Clause IV was adopted - until then, from 1918, Labour was a party with a "far left agenda" as you call it.
georgeob1 wrote:I doubt that Brexit was the main or only issue in this result.
Well, at least that's what people say - especially in the former strong Labour constituencies why they voted differently then the last decades.