Voucher Express

Ordering of major store gift vouchers, categorized by store name and by product type.
http://www.voucherexpress.co.uk/

Flex-e-vouchers

Offers vouchers which can be spent in a number of outlets. Lists the businesses accepting the vouchers and includes an order form.
http://www.flex-e-vouchers.com/

Intashop

Ben & Jerry's gift cards with ice cream vouchers, t-shirts and gifts.
http://www.benjerry.intashop.com