I don't know how I missed it, but I have just seen that New Address tab. Must have been there all the time, probably even in the older version. Not used for a long time and getting quite forgetful.
Thanks.
Hello malcolmfoster, welcome to the forum.
Electrum is a powerful Bitcoin wallet and offers many advanced features. The user interface is more utilitarian than aesthetically pleasing. That is the price we must pay for such an extensive feature set. You can tailor the Electrum interface to your needs by choosing
View from the menu bar, where you can show/hide additional tabs such as the one that displays your addresses.
Maybe an older version of Electrum app didn't show that tab by default, so you didn't notice it before. Anyway, as others have mentioned before me, all of the addresses listed there are yours, and you can use them to receive coins.