I'm in the NW and picking mangetout, Delikata and Pea Purple Podded 'Purple Pea' I think that's what it's called(junglseeds) The purple podded plants are about 5ft tall and don't seem to want to stop growing.
Aslo have Pea Sugar Snap(simply seed) and pea's 'early onward' (Wilko's) these are at least 4ft tall and in flower. I've picked the imature pods to encourage more flowers.
I sowed them indoors in toilet rolls and once the height of the roll started to put them in the GH daily to stop them going leggy. Will post the date sown tomorrow, it's on the label planted out with them but to dark to find now.