Dyna-ti,
I think this is a bit like the government car scrap incentive, I was still running my own car sales business then. Those who were running older cars as the second / third car could afford to trade in their car and buy a new one. The car had to be scrapped. Thus those well maintained older cars vanished. The person running the older car because they couldn't afford anything newer still could afford to buy a new one, hence no benefit from the scheme. PLUS the older car that they would have bought had now been scrapped, so they couldn't even upgrade a few years. The rich gained, the big car companies gained, those at the bottom dipped out.
Now look at the bike scheme, realistically what is £50 going to get you if you aren't already riding a bike and looking after it?..Not a lot! But you will be told it needs more money spending on it.
Let's look at a bike that needs £100 spending on it to make it safe, the customer doesn't have that, so you do £50 worth of work but the bike is still not roadworthy. If a bike shop hands the bike back they are potentially in a whole bag of trouble if the customer has an accident....that thing called duty of care which will be screamed from the roof tops by the "no win, no fee legal vultures". Don't believe me? It is already a thing with trading standards and if you still don't believe me ring them and ask.
The other option is the bike shop hands them back the bike and the voucher, does no work on it, and gets a load of abuse.
So nice idea, but as pointed out above, flawed in so many ways.
Janners