A Statutory Instrument

Having listened to the debates in the House of Lords regarding the changes George Osborn, the Chancellor, was making to the Tax Credit system I am dismayed at the disingenuous comments made by leading members of the Government and the Media Pack on the matter.
As I mentioned before we don't have a written constitution.
There is an unwritten code which prevents the House of Lords voting against a 'financial bill' that is proceeding through the Hose of Commons.
This code also describes the finance bills as part of the governments annual business through presenting its business agenda at the beginning of each year in the traditional Parliamentary Opening Ceremony, The Queens Speech. 
The new Tory government had, as part of its 'election manifesto', avoided any details of the cuts it intended to make in its attempt to bring down the deficit.
Not having announced its specific intention regarding the cuts it used what is called a "statutory 
Instrument" to in effect bypass the convention of announcing its intention at the start of the parliamentary year in the queens speech.
Having chosen the "statutory instrument" instead of a normal parliamentary bill, the Government laid its self open to allowing the Lords to vote against the 'statutory instrument'.

That is the nub of the situation and it is disheartening to hear MPs and Constitutional experts ignore the important differences. They know the procedural rules well enough but it is an indication of their determination to put the Lords in their place that they feed the public with scare stories of how unelected people can control the elected MPs 
Our elected MPs have not covered themselves in glory over the last decade and it makes me sick to hear them pontificating when we also know that the 'electoral system'which placed then in Parliament is deeply flawed and unrepresentative.