OK so these helmets are normally used by professional cyclists, including Team Sky.
Normally too expensive for Tommy tight*ss, but if you add the code VERTIGO you can have a whopping discount of £65 from
the already discounted price of £123.74 at cyclesurgery.com.
The code is for trading in your old helmet, and they will ask to email a picture of your old helmet. But the good news is you don't have to return it, so happy days...
Be quick, these will NOT last long.