Saver Delivery (usually 6-10 business days) - £7.80 on orders under £40, orders over this use "Standard Tracked Delivery" (below).
Standard Tracked Delivery (usually 3-5 business days) - £3.95 on orders over £120 (otherwise £6.50, or £9.80 on orders under £40)
Express Courier Delivery (1-3 business days) - £41 on orders over £135, otherwise £51
Prices may vary by a very small amount in the checkout (usually cheaper!)