I believe that the well-known tradition of East End families decanting to Kent to spend a few bucolic weeks in late summer hop-picking persisted into the post-war period; and to judge from photographs and other accounts, the whole thing seems to have been thoroughly enjoyed by everybody involved.
There seems to have been something of an equivalent in the farther reaches of east London - way out in the Barking and Dagenham area. However, there it was not hops that were being picked but peas - presumably to supply the London market. This curio came to light after a recent trip to look at some school records at Barking & Dagenham Archives. The detailed logbook of Beacontree Heath School (presumably kept by a very diligent Headmaster (ref. BD213/2/2)) records very low attendance in July in the mid-1920s, and disapprovingly notes that many of the pupils were off pea-picking.
Perhaps pea cultivation in Essex never became as established as hop growing in Kent, or maybe pea-picking by children was undertaken purely out of hard economic necessity and it never acquired the golden, quasi-holiday aura that seems to have become attached to the hop-picking excursions. Whatever the reason, summer pea-picking as a tradition hereabouts seems to have faded entirely from the popular consciousness: I had never heard of it prior to browsing the school logbook, which is perhaps no surprise in itself, but nor had any of the staff at the archives - surely an indication of just how deeply summer pea-picking had become buried in the unexcavated past.
