Are you one of the "spies"?

A British survey has revealed a nation of spies, rifling through their partners' text messages,tapping phone conversations, tailing loved ones with webcams and even satellite navigation systems, to check their significant others are faithful.

The most favoured way of keeping tabs on a partner is checking their text messages, with more than half (53 percent) of those questioned admitting sneaking a peek.

For young people aged 25 to 34 the number shoots up to a startling 77 percent.

The second most popular way of finding out if a partner has been a love-cheat is to read their e-mails. 42 percent told the UK Undercover Survey that they had carried out such a ploy.

The third is the old-fashioned method ofrummagingthrough a partner's pockets, (39 percent), the survey found this technique was particularly popular with women.

But men weren't in the clear. They prefer to break another great unspoken rule - reading their partner's diary.

And neither is the spoken word safe, with many people admitting to listening on conversations their other halves believed would be confidential.

About one in three (31 percent) of those questioned in the survey, commissioned by the Science Museum in London, for its Science of Spying exhibition, said they covertly listened in on their partner's private conversations.