I could well be missing something here so I'm happy to have it explained to me 
Living wage increase is great but what will happen to those on or around that figure already?
Let's say a person at a supermarket checkout gets moved to £9 per hour but a supervisor is on £9.50 an hour, more responsibility etc, then surely the supervisor will want an increase too. So if before the LW the difference between the two was £1.50 an hour then the supervisor would expect to have a rise of that amount. Same to be said for a huge amount of of businesses
If so then the cost of living will shoot up