Dear Lawnmower;
Don't assume that leaving the UK exempts you from paying tax. You will be liable, one way or another, for the tax on your income, wherever you earn it. There is no way to avoid paying tax in the EU unless you are a resident of Monaco or a few other exclusive retreats.
In general, it is better and less likely to be questioned if you register for tax in the country where you derive the majority of your income, in your case, the UK.
You can elect to pay your tax liabilities in the country of your primary residence but then you might find it difficult or even impossible to claim any allowances you are entitled to, e.g. the Tax free portion of your flight allowances.
Anyone who has the idea that the taxman will ignore you once you leave these shores is sadly mistaken. It was the case some years ago, but no longer. As advised, study the tax laws and read all the literature on the UK Gov website. It pays to be upfront with HM Taxman.
Whatever you do, don't stop paying your taxes if you do move abroad as the resultant bill will be far more than the original liability.
I know from experience.