Yes. The panniers need adjusting so that they are as far back as possible.

Yeh, just slot straight in. Takes some setting up on the pannier brackets to nice tight fit, so no movement in wind & travel, but only 5 mins work.
Once got your clip brackets in right position, don't have to alter them again. But sit on the bike & pedal first because u want to go as far forward with the panniers as possible for weight distibution, otherwise your bike wants to always do a wheelie, but if u take 'em too far forward, u can bang your heels on the bags when pedalling.

Yeh, I've got the same bike. I had to grind about 5 mm off the corner of the rack where the bolts are, because it's a common thing with the boardman's, that the rack bangs the bottom quick release wheel bolt (won't go down far enough), so rack bolt won't line up with bike.
But as long as u have cheap grinder, don't let that put u off, it is just 5 mins, just takes some guts to grind your brand new rack.

With a hardtail no problems fitting this rack or any other.
Just check you have bosses at the top of your seat-stays, and eyelets at the bottom end above your dropouts (where you may fit mudguards). If you have no bosses, use a seatclamp with rack-mount or P-clamps, which can also be used at bottom of seat-stays for fitting the rack. If you need some extra adjustments you can use a rack extension kit which Wiggle sell!
Happy riding

I guess this is a hardtail? If so no problems fitting this rack or any other.
Just check you have bosses at the top of your seat-stays, and eyelets at the bottom end above your dropouts (where you may fit mudguards). If you have no bosses, use a seatclamp with rack-mount or P-clamps, which can also be used at bottom of seat-stays for fitting the rack. If you need some extra adjustments you can use a rack extension kit which Wiggle sell!
Happy riding