Have a look further down that page:
We have listened to your feedback and we’re happy to announce that from Monday, 16 November, we will be re-opening our Galleries North Club lounge as a customer waiting area with a reduced selection of grab and go items.
and on the linked FAQs page:
During the UK national restriction period, you’ll still be able to enjoy your time in our lounge. So help yourself to our grab and go items while you’re there and sit back and relax.
Our popular Your Menu service will return once the UK national restriction period has been lifted and we intend to re-open our Galleries South Club and Galleries First lounges at Terminal 5 as soon as we can.