Welcome to the Q&A Forum

One of the sites I work with is, ukvisaandimmigration.co.uk which has lost a lot of ground in terms of SERPS. We were up to 12 and 13 for keywords such as uk visa and uk immigration but have since dropped down to 30-40. Has something changed recently? We know of the panda update, is it this?

After having our site up for over a year and gaining PR 3 and more than a dozen page 1 rankings on Google for most of our competitive terms, we have realised we have to transfer to .com from our current .co.uk URL for legal reasons. What would the best way be to carry out such a move in an SEO perspective?