Beaconsfield is in the top 20 safest Parliamentary constituencies going into next month's General Election, according to a survey.

The Voter Power Index places as Beaconsfield 633rd on the list of the UK's 650 constituencies - making it one of the safest seats in the country.

According to the survey, the average voter in Britain has 14 times more voting power than those in Beaconsfield because of how safe the seat is.

Just over 61 per cent of the electorate voted for Dominic Grieve at the 2010 election.

The Voter Power Index states on its website: "In the 2010 election, more than half of all voters voted against their winning MP. Their votes simply didn't count.

"In the UK, the only voters with any real power to choose the government are those who live in marginal constituencies. Indeed, voters in the most powerful ten per cent of constituencies will wield more than 30 times as much power as the least influential.

"The rest of us have little or no power to influence the outcome of the election. In fact, statistical analysis by the New Economics Foundation shows that one person in the UK does not have one vote - it's more like 0.30 votes.

"In some ultra safe constituencies the value of your vote falls to practically zero."

According to the Voter Power Index, it is very unlikely any of the other Bucks constituencies will change hands at the election.

The creators of the index are campaigning for the introduction of proportional representation, claiming "the power of votes would be much more equal" if the system changed.

Chesham and Amersham was deemed to be 'ultra safe' by the survey, which ranked it at 562nd on the list.

Wycombe is 376th on the list, which is 'very safe'. At the last election Steve Baker won after polling just under half of all the votes cast, claiming 48.6 per cent.

The Aylesbury constituency is 448th, while Buckingham is 469th - although the three main parties will not fielding candidates against Speaker John Bercow.

The safest seat in the country, according to the index, is Knowsley. At the 2010 election, 70.9 per cent of people voted for the Labour candidate in the Merseyside constituency.

The most marginal is Swansea West, where 65.3 per cent of people voted against the winning candidate Geraint Davies.

Go to www.voterpower.org.uk to see the full list.