The gradual decline of the quality of life in the UK can be simply attributed to poor governance by greedy politicians and the love of giving massive tax breaks to the rich and to mega corporations, whilst privatising anything that is deemed unprofitable.
Nothing to do with immigration nor membership of the EU.
Britain has no one to blame for its current situation other then itself. David Lammy got it quite right.
fyi. RT just happened to be the clip I found, I do not endorse RT in anyway.