Two maps via this link.
1. Map 1 showing when each seat last changed hands at an election. The darker the colour of the constituency the longer it has been a safe seat. When did Ashford last change parties? Which is the oldest safe seat in the UK?
2. Map 2 showing safe seats at the 2010 general election. If a seat is given a party colour (red = Lab, blue = Cons, Orange (!) = LDems, Yellow = nationalist parties e.g. SNP, Plaid Cymru) then it counts as a safe seat for that party. If it is one of the shades of green then it counts as a marginal at the 2010 election.

'via Blog this'