Medexpress discount

[TExxx]

Is there a discount code if you are not a new customer or is it worth just looking around at different suppliers?

I’ve not seen any code for existing customers. Someone used my referral code on the discount code thread last month so I sort of got £40 off my second pen which made it cheaper than other companies. I guess that’s why people post on the thread as that’s like the way you can get money off as an existing customer.
Besides that, I read on another thread that IQ doctor are cheaper.