Seeing as I got some really helpful replies to my tripod query I've decided to come back and see what other bargains you have for me 
I'm after a few bits of kit to fulfil my wants (for now), a flashgun, a wide angle lens, a new rucksack and a new shutter cable for my D3100.
Flashgun:
I've been looking at the Nissin Di622 which can be had for ~£100 and a diffuser for ~£10. Is there anything else better than this in the same price range? I've never really used flash before so I have no clue what too look for
Wide angle:
I've spied the Tamron 10-24mm lens for ~£360, it gets mostly good reviews too. If there are any old lenses (with aperture rings) that are worth a look at I'd be interested in these also as I will likely be getting an old (80s) Nikon film SLR to play with soon so any extra lenses for that is a bonus!
Rucksack:
This one I'm just at a loss, I've looked at (and liked) the Fastpack 100 however with my 70-300 lens it's just too small, the 200 on the other hand leaves too much room for movement due to a small camera body. The Slingshot 202 I believe is a great fit however I don't like the single shoulder idea as I do hill running with my camera. The, ahem, rainforest Basics bag looks great however I'd also like somewhere to store personal items (waterproofs, food, etc). If there was enough room for a netbook too I'd be over the moon but it's hardly a deal breaker. Yep I'm an awkward sod
Shutter cable:
More of a question than anything, is there a remote I can use which will either allow me to use exposure bracketing (I can do this with my laptop via USB cable but it's a lot of messing around for a single HDR) or at the very least a cable that allows me to change my shutter times without touching the camera?

I'm after a few bits of kit to fulfil my wants (for now), a flashgun, a wide angle lens, a new rucksack and a new shutter cable for my D3100.
Flashgun:
I've been looking at the Nissin Di622 which can be had for ~£100 and a diffuser for ~£10. Is there anything else better than this in the same price range? I've never really used flash before so I have no clue what too look for

Wide angle:
I've spied the Tamron 10-24mm lens for ~£360, it gets mostly good reviews too. If there are any old lenses (with aperture rings) that are worth a look at I'd be interested in these also as I will likely be getting an old (80s) Nikon film SLR to play with soon so any extra lenses for that is a bonus!
Rucksack:
This one I'm just at a loss, I've looked at (and liked) the Fastpack 100 however with my 70-300 lens it's just too small, the 200 on the other hand leaves too much room for movement due to a small camera body. The Slingshot 202 I believe is a great fit however I don't like the single shoulder idea as I do hill running with my camera. The, ahem, rainforest Basics bag looks great however I'd also like somewhere to store personal items (waterproofs, food, etc). If there was enough room for a netbook too I'd be over the moon but it's hardly a deal breaker. Yep I'm an awkward sod

Shutter cable:
More of a question than anything, is there a remote I can use which will either allow me to use exposure bracketing (I can do this with my laptop via USB cable but it's a lot of messing around for a single HDR) or at the very least a cable that allows me to change my shutter times without touching the camera?