Pues parece que ya no siguen siendo gratuitos. Ahora en la página pone claramente: FREE UK DELIVERY.

Mirando un poco más a fondo he encontrado lo siguiente:

Delivery Charges

Due to rising Postage costs we have had no alternative but to introduce a small charge for postage and packaging on European and Overseas orders.

A charge of £1.50 will be added to any order being despatched to outside of the UK. This charge will be levied on the order and not on the amount of items contained in the order.

E.G. 1 item on an order = £1.50 delivery charge total
2 or more items on one order = £1.50 delivery charge total

All orders being despatched to inside the UK and Channel Islands will still be shipped free of charge.

We apologise for any dissapointment that this may cause.