wouldn't it be better to have an anmesty on all the illegal immigrants living and working in the UK? they're doing jobs without which places in the UK - especially London would simply grind to a halt, theyre the invisible oil in the machine. get them on the books and paying taxes, deportation would be a shortsighted and expensive travesty
I think there is a degree of merit in this BJ and it should be explored further as something must be done to identify just how many non-nationals are living and working (or otherwise) within these shores.
To address this however still wouldn't help us sort out the real problem of what essentially is an apparently unstoppable influx of people many of whom have no real skills and who are destined to end up in a twilight world eventually depending on social benefit to care for the families they either bring with them or start after they arrive.
I have no doubt that many immigrants decide to come here for the opportunity to work but I would also say the a fair number also come because they know there is a system of social care and yet others come because they can due to the lack of real border control and a frankly incoherent immigration policy.