However, Brits should plan carefully before making the great escape. Experts warn that becoming an expat is complex and hasty plans could backfire.

One in 10 wealthy families are considering moving abroad to avoid the rising costs of private education, according to Saltus Wealth.

Many middle-income familes are also looking to avoid potential raids on capital gains, inheritances and pensions in the autumn Budget.

Russell Gous, editor-in-chief of TopMoneyCompare, said moving abroad may cut your tax bill but hidden pitfalls could cost you in other ways. “Families need to be aware of the financial implications of relocating, particularly currency risk when transferring large sums internationally.”

Avoid pricey high street banks and consider using a specialist currency transfer service. “Otherwise the costs of moving abroad could outweigh any money you save on school fees.”

That’s only the start of the challenges Brits face when looking to up sticks and move overseas.

Don’t quit the UK in a fit of pique, make sure your sums add up. Make sure you understand the tax implications, too.

If you decide to sell UK-based assets when you le ave, you may have to pay tax on them, for example, a second home or buy-to-let property sale may incur capital gains tax (CGT).

If your property transaction doesn’t complete until after the Budget, you could end up paying CGT at a higher rate than today, depending on what chancellor Rachel Reeves does on October 30.

Cutting links with HMRC isn’t easy.

If you plan to retain a property in the UK and let it out, then you may still have to pay UK tax on the rental income, and potentially CGT if you sell it later.

You may also have to complete a self-assessment tax return over here, as well as declaring tax in your new country.

This could involve completing two tax returns and paying for two lots of tax advice.

Pension withdrawals may be complicated and you will need specialist advice to work out where you pay tax on the money.

In some countries, including Australia, New Zealand and South Africa, your state pension may be frozen at the level paid when you left.

This steadily erodes its real value over time causing endless misery for more than half a million British expats with no respite in sight as the government refuses to change the rules.

Leaving the UK to escape Labour tax raids may not always save you money (Image: Getty)

In other quirks, if you want to transfer assets to a spouse or civil partner, the UK has generous rules that allow you to so free of tax. Your new jurisdiction may not be as generous.

Similarly, money in tax-free UK Isas may suddenly become liable to local levies if your new jurisdiction taxes your worldly wealth.

Having a dual tax residency can be highly complex, said Joanna Newton, partner at Stowe Family Law, particularly for couples who divorce. “Tax havens like Monaco, Italy, Portugal, Switzerland and Dubai may sound idyllic, but it is not that simple for couples who separate after the move.”

In the UK, the starting point is that everything built up during the marriage is shared equally, but that’s not always the case overseas. “For the financially weaker party in the marriage, this can have far reaching consequences,” she said.

Inheritances are tricky, too, as rules are different overseas. “It is important to seek expert legal and financial advice both here and abroad,” Newton said.

Again, it’s yet more cost and uncertainty.

The great escape is tempting. Who doesn’t dream of sunnier climes and lower tax bills? But it takes a lot of time and money to get it right.