Don't see why it should. As far as I know, everything is done in the UK. CD production is, I assume that printing is, Burning Shed is a UK company, and it looks as though they use the UK's Royal Mail.
@Quinault I only have "Standy By Light Coming" and "Old Haunts" to hand. Both were manufactured by www.noisebox.co.uk . Their website says that they do short pressing runs in-house, and for long runs "We manufacture long runs of CDs and DVDs (more than 500 units) through one of the UK’s top pressing plants" .
Don't see why it should. As far as I know, everything is done in the UK. CD production is, I assume that printing is, Burning Shed is a UK company, and it looks as though they use the UK's Royal Mail.
So I can't see anything needing to change.