The Duke and Duchess of York do it and Hollywood actress Demi Moore even takes her new husband along when she and Bruce Willis do it.

An increasing number of ex-couples, so it would seem, go on holiday together for the sake of their children.

At a time when more households are having to rein in their spending due to the economic downturn, taking one holiday “en famille” makes more financial sense than each party taking a separate vacation with the kids. But can it really work?

It very much depends on what kind of relationship you have with your ex-spouse. If you’re at loggerheads or full of bitterness, spending a fortnight with them in a cramped apartment isn’t a very bright idea. But for former couples who have a half-way comfortable relationship, it is an idea that might be worth considering, however oddly it may be viewed by outsiders.

There are several things to think about if you’re contemplating a joint holiday. Firstly, your relationship with your ex: have you really laid the ghosts of your marriage to rest? Because if not, a few drinks round the pool could unleash pent-up resentments or angry recriminations, which could sour the entire trip. Both of you need to feel sanguine enough to be in close proximity for a length of time. It’s also important to question your reasons for holidaying together – is it only for the kids’ sake or do you secretly hope a week in the sun might rekindle your romance? If the latter, then you are on dangerous ground because there’s every chance your feelings won’t be reciprocated.

The children, too, have to understand that a family holiday doesn’t mean their mum and dad are getting back together. You will need to explain the situation carefully and sensitively so as not to give them false expectations.

Plan the practicalities of the trip well in advance. For instance, is the accommodation suitable for adults who don’t want to sleep together? Will you split the cost of the holiday equally and who will pay for the ice creams? Will there be opportunities for you and your ex to go off on their own for the day to get some breathing space? If your former spouse has a new partner, will they be on the phone to them ten times a day?