If I order one of these monitors and find dead pixel(s) and decide to return the monitor under the distant selling act (or whatever the revised name is). How would I send it back and at what cost roughly? Can overclockers arrange to pick it up through one of there couriers or has this got to be done by myself?
Distance Selling Regulations no longer apply and the law is now called Consumer Contracts Regulations and has been in force since June 2014. You have 14 days (including weekends) from receipt of the goods to decide you want to return them for any reason. So the answer is yes you can return the monitor for that reason. You would have to sort out the return to Overclockers including postage costs yourself. It's possible that Overclockers might arrange to pick it up for you, but they would still deduct the cost of that pick up from the refund they provide you. They can also deduct a reasonable amount from the refund if your handling of the goods has reduced their value (unlikely if you're just turning it on to check for dead pixels).