Stansted Express is currently running a promotion whereby you can upgrade to First Class for just £5.
On the face of it, this is a decent deal, because your £5 also gets you:
access to the First Class lounge on Platform 10 at Liverpool Street, where you can grab a free coffee and newspaper
Fast Track security access at Stansted Airport
You need to book online and use the promo code FIRST to get this deal. You can find full details of how it works on this page of the Stansted Express website.
We did a review of Stansted Express First Class a couple of years ago – click here – including this video:
…. although I’m not sure if the rolling stock is still the same.