I see that under the concentrates that BestCigLiquids is mentioned here, I've just made my first purchase from them, a week ago and appear to be having trouble with shipping. I paid for dpd express shipping, but their invoice says shipped via royal mail, additionally the tracking number provided on the invoice is not found on the royal mail website. I've tried to contact them several times via email and now, today, directly from the "contact us" section on their website. No response. I was just wondering, what others have experienced using bestcigliquid.co.uk.