Recently used i2visa for both getting my documents verified and also to get my Chinese Z visa and really cannot recommend them enough. Joey and his team are amazing, knowledgeable and could not do more for their clients. Whether it be a quick reply to an email query or on WeChat at a late hour when am unsure of details, always available and looking to help you. I had to go to Edinburgh in person to give fingerprints, so flew up and went to the office and again received great customer service and they are all so approachable. Definitely the best out there in the UK market, takes away any stress of red tape and visa worries and wholeheartedly recommend them to any and all. Thanks guys!