a way to add £5 to postage for courier costs?

the supplier i use add a flat £5 to any accrued postage costs for next day delivery and £10 for saturday delivery, i am using table rate which is set by price not weight.

is there any way of having zen cart offer an additional courier service for £5 on top of whatever the postage may be for their order?

i have considered doing this by using an attribute but it would add it on the product side, i would like this to be very clear during checkout. any ideas would be much appreciated

Yes, if you go in the table rate settings there is a handling fee option.

sometimes its stares you right in the face doesnt it lol

i'll download a clone and add handling to it, thanks for your reply!