Your first move should be to split the list into pure .co.uk, and into hyphenated .co.uk + .org.uk. Realistically, there's very little you can do to "move" the latter group.
Then look through what's left i.e. the pure .co.uk names and try and pick out the top 5 most commercial names. Be brutal. If there's any reason for a name not to make the cut, it shouldn't be on the list. Remember, you want 5 names not 10 or 20.
Then try proactively selling each of those 5 names to the most relevant end users. You may get a sale, you may not, but at least you've given a proper go at it and, should you get a sale, you'll end up with more than peanuts as a result.
If you see any degree of success, then pick the next best 5 and repeat.
At some point (probably quite soon) you're going to get to a stage where it's hard to make a realistic case for an end user buying the domain (when you consider the costs they may incur in rebranding, moving their existing site, etc.)
And that's where you make the harsh decision to start dropping names.
As for the names on the second list, you probably want to drop all of them, but if you can't bear the thought then force yourself to cull at least 70-80%. They weren't selling well even when exact match bonuses were at their peak, they almost never sell now, and once .uk is out what little interest remains is will shrivel and die.
