We are receiving an increasing number of reports of slow delivery by Royal Mail. Most customers seem to receive orders within three working days of them being posted, but this year has seen an increase in the number that take at least a week to arrive.
We offer upgrades to First Class post (add £1) which can help get things to you faster, or to Special Delivery, which is usually reliable and fast, but you need to add £6 for this (for any order up to 300 pairs).
The Guardian published an article last year about how Royal Mail's "modernisation" has "put the snail in Royal Mail". You can read the article here.