The London Allowance is topping up of pay to workers in London because of the expense of working there. Their pay is boosted compared to someone doing the same job and not living in London.
Seeing as all MPs work in London, then their pay is not boosted to be higher than those working outside London, because there aren't any. A bit of a daft question.
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MPs can still travel first class, if it is cheaper than the standard fair (which is normally is). And they do check.
// You should consider value for money when purchasing tickets which may need to be changed at short notice. In the interest of saving money for the taxpayer, you should exercise discretion and balance low-cost, often inflexible tickets against the likelihood of cancellations and the subsequent charges they will incur.
The online expenses system will automatically check the cost of a standard open fare when you enter the details of your train journey.
You can claim for first class travel if it is less than the cost of a standard open fare. //
http://parliamentarys...nce/Pages/Travel.aspx