The UK system is vastly superior to the US system, but there are some curious results for votes to seats in Parliament.
This is based off what I found from BBC.co.uk
UKIP gets 12.6% of the vote and 1 seat
SNP gets 4.7% of the vote and 56 seats (!)
Lib-Dem gets 7.8% of the vote and 8 seats
Really shows how the mechanisms within a voting system skew results. 5% of the population vote will have 8% representation while 20% of the population vote will have 1% representation.