I don't know what wages are like in the UK but around here 50k is not much. An unskilled worker on an automotive assembly line would make more and get better benefits.
Just looking at some census stuff that's all... according to the census (which is a few years old now o/c) the median earnings for (full time) male workers is $37,057 (for female (full time) workers it's about $10 thousand less). Interestingly the average family income is about $50 thousand dollars.
Now in Michigan the average earnings for a (full time) male worker are $41,897.
$50,000 isn't a *lot* as such, but it's not really deserving of the term "only...".