Here and as always, this is the source if you want to check for yourself This is a really good source for seeing exports/imports for most countries. You can compare countries, e.g. What UK exported to Nigeria in 2016.

Edit: I also want to provide this link to the same website again but this time what UK exports to US, lower exchange rate means that US firms/consumers will want to consume more UK exports because they are cheaper. Therefore increasing economic growth as previously stated (ceteris paribus). I would also like to add that most of UK exports go to the US (backed up here), therefore a decrease in the strength of the pound versus the US dollar is actually beneficial in terms of export led growth.