Any reason why you can’t use Royal Mail for within the UK mate?
Perfumes and aftershaves
(including eau de parfum and eau de toilette and alcohol-free perfumes, but excluding non-flammable perfumed creams, gels, oils or lotions.)
International - Not allowed in the mail
UK - Allowed in the mail, see restrictions and packaging guidelines below:
Volume per item must not exceed 150ml.
No more than four items in any one parcel.
Must be sent in its original retail packaging, placed in strong outer packaging and cushioned to prevent breakage.
An ID8000 label must be applied (see example ID8000 label).
The sender's name and return address must be clearly visible on the outer packaging.
These items must be presented at a Post Office® counter.