There is a fee of £10 for Nominet to change the IPS tag on a .uk. For GTLD, most UK providers resell an American ICANN registrar so you would have to go to the 'upstream' registrar and ask for your domain back. This can be somewhat more tricky.
Having said that, it's highly unlikely that a hosting/domain company with more than a few hundred clients would completely disappear. Normally when a company like that is failing, a competitor will swallow them up and service will continue pretty much as normal.
In terms of Vidahost, they've got thousands of domains on their nameservers and fantastic growth. You really don't have anything to worry about with them.
Web hosting is largely recession proof anyway. During a recession, more people turn to the internet to make money, not less. And when a company is failing, the website is the very last thing to go, right before they turn out the lights.
Having said that, it's highly unlikely that a hosting/domain company with more than a few hundred clients would completely disappear. Normally when a company like that is failing, a competitor will swallow them up and service will continue pretty much as normal.
In terms of Vidahost, they've got thousands of domains on their nameservers and fantastic growth. You really don't have anything to worry about with them.
Web hosting is largely recession proof anyway. During a recession, more people turn to the internet to make money, not less. And when a company is failing, the website is the very last thing to go, right before they turn out the lights.
