I had an Altura Nevis jacket, it was well made and completely waterproof, but the fit was totally wrong for me. I'm quite stocky and the Altura jacket was too tight across the shoulders and around my upper arms, so I'd avoid Altura if you're more Chris Hoy shaped than Bradley Wiggins shaped.
I bought one of these: http://www.ebay.co.uk/itm/Tenn-Mens-Rap ... 3cc4ec2652
. I'd never heard of Tenn before, but I'm pleased with the jacket, it fits much better than the Altura, seems as well made and has so far been completely waterproof.
I also have some Altura Nevis waterproof trousers and these fit just fine, but I only wear them if it's raining really hard.
I also now have full, permanently fixed mudguards and they are much better than the clip on ones I had before. The rear clip-on was OK but the short front mudguard meant that your feet got pretty wet from the spray off the front wheel.