I have no idea if Lord Truscott and the other three Labour peers are guilty or not of the accusation that they were prepared to receive payment for seeking to amend legislation. If true it is far more serious than the "cash for questions" sleazegate which engulfed john Major at the end. Lord Truscott was Hertfordshire's Member of the European Parliament when we were a single constituency elected under the first-past-the-post system.
I have to say he never impacted much on me or my consciousness but doubtless he was diligent, although I find it odd that a thorough google search reveals absolutely nothing about his time as our MEP. Being an MEP is a salaried position. The House of Lords is not salaried although peers get very generous allowances together with access to amazingly cheap food and drink in very salubrious surroundings. The staff are charming and courteous, the architecture is stunning, it has rightly been described as the finest club in London. When it works well it is brilliant.
When the Conservative Party was totally supine and broken, it was the Lords who supplied the opposition to Tony Blair's worst excesses on civil liberties and the like. The trouble is that in an attempt to even up the numbers in the Lords (which has always been heavily weighted towards the Conservatives), some pretty dreary Labour party hacks were elevated as voting fodder. But even they should be able to tell the difference between right and wrong.