If it is rewarded what's to stop strikes over anything?
Do you really think strikers are going to strike over the fact that there isn't a coke machine where they work? People who strike take striking very seriously. Most workers aren't paid when they are on strike, and are losing pay for every day they strike.
Sometimes strikes are necessary because of an inflexible, exploitative employer and to, quite simply, defend the rights of employees.
Nothing
Complete nonsense. In fact, many of the rights we enjoy today are the result of people and unions striking and fighting for rights at work.
and the Government is likely therefore to crack down on strikes through new legislation eg insisting that a 50% turnout has to be achieved to make the strike legal and valid. At the moment far less than 50% of members have been voting overall and some of those voted no.
This would be a mistake on their part, causing widespread industrial unrest. It would not go down well with the public, either, who are largely sympathetic to people suffering from public sector cuts (because they are, in fact, suffering themselves).
The UK already has some of the toughest anti-union and anti-strike laws in europe. It is already very difficult to strike.
Furthermore, requiring 50% of members to vote for strike action wouldn't go down well coming from a coalition government which received a minority of the vote - with the Tories receiving a small minority of the votes out of the eligible population.