Wiggle are being Nobs

Bit of a poor show really - Comes up as £749.99 on my account listed as 'your platinum price' but it's the same when you are not logged in at all, but just listed as 'save 11%'

Does anyone know if the Wiggle platinum discount applies

Your personal discount applies to the list price, if the discount offer for everybody is already more than that then you don't get any further discount. In this case, the general discount is 11.8%, so if you're a Platinum customer you should get a further 0.2% off, i.e you should pay £747.99. If you're logged in with your platinum credentials and it's still showing as £749.99, that's down to a coding error and you should complain, assuming you can be arsed to do so over £2
Also, loyalty discounts apply to "most" products, and Garmin pedals seem to be one of the things not included in "most"

Platinum price £749.99