Just an update for anyone sending samples to the UK or vice versa.
Just sent a small box with 50ml inside to Germany and it was £8 (Royal Mail … they are the most expensive but if you are lazy the quickest 
)
There are cheaper options available
ParcelHero and ParceltoGo where the price drops to around £5 (insured) So I will be using this in future when i do a split.
Thanks
Adrian.