Does anyone know if there is a way to allow the customer to select from different priority postal services. I would like to offer my customers the option to:

a) Use standard mail

b) Use priority next day delivery

c) Use registered delivery



Each option has a different cost.



I could do this by adding the mail options as separate products, but is there a way to provide the option in the cart?



p.s. I am based in the UK shipping domestically in the UK.