Now, a '50 Shades' inspired lovers' agreement

In exchange for kisses, cuddles or a spot of light whipping, the Lovers' Agreement introduced by McEntegart Legal Limited specifies what people get in return - whether it's a holiday, a shopping trip or a long, hot bath.

"It is drafted for partners to have a laugh and good time together. It is for wives, husbands, boyfriends and girlfriends," the Daily Mail quoted lawyer Francis McEntegart as saying.

"You can offer your lover a shopping trip, a holiday or a bottle of wine in return for a kiss, cuddle or whatever you like to add into the contract.

"Although we have included examples, you can really add whatever you both would like," he said.

The contract isn't actually legally binding.

"It is not to be taken too seriously and you can have the document instantly," McEntegart said.

"It can be downloaded day or night and you can then use it as many times as you and your partner like!" he added.