I think there are good conditions for that though;
Rob will have just competed in Euro (right?), firstly giving him more comp experience considering what little he already has, but also meaning that the UK Open will feel a lot smaller and lower pressure and thus he'll be more likely to get good results (and a good result for Rob would be sub 10.50).
Breandan often does well under pressure (Worlds anyone?) and
the UK Open will have a one-at-a-time final as it always does, with only a few people in. Plus he's improved a lot lately (sub 9 avg 100) and is doing better under 'personal' pressure (9.57 avg on vid).
The main thing for me is that all 3 of the 3x3 rounds are on the first day. I have an awful habit of burning out by doing thousands of solves on the first day and being really tired for the second. If you look over my competition history it's the one day competitions where I do well in more things, and in the 2 day competitions I do better on the first day. It'll also be my first competition after two pretty big competitions in North America, both where I put a lot of pressure on myself because at the time I thought they would be my last competitions full stop. Plus I've suffered quite badly from PLL case variance (a ton of Ns and G perms in the past 2 comps), but that's just me being *****y
So have faith!