"nothing whatever to do with "cheap labour"

Hang on didn't Corbyn say during the election campaign that he was going to:

a) Accede to EU requirement for free movement of labour

b) Stop foreign contract labour gangs from working in the UK undercutting UK rates of pay.

This presents a direct contradiction and b) would be regarded as being illegal by the EU as b) is a restraint of trade within the EU.

Unfortunately for Carroll & Co., who wish to present a different picture, those exploiting labour in the UK are not rich UK landowners, they are foreign gang bosses who "legally" contract labour in their country of origin then ship them to work in the UK on wages below the minimum wage in the UK. And according to EU Law nobody can do anything about it.