Isn't a weak pound a chance for the British export economy - if there is any - to grow significantly?
It's great for raw materials export, and services export, and theoretically generally for products where the raw/imported materials have a relatively low cost compared to the exported product.
It's terrible i.ex for products that are getting from assembled from pre-made parts, since what you win on exports get eaten up by the increased cost of the imports. Generally in a modern, super trade based and integrated economy with many sub-suppliers, I'd say there is little gain.
I really have no great idea of what UK's exports look like, but wikipedia gives an idea: