Really don't know, but I'll made a prediction:
Lockdown until end of May.
Other shops can open but with reduced stock and limits on number of people allowed in (the latter part may not be a necessity but hopefully a common theme like it is now).
Food places may reopen but no sitting in and only to go e.g. costa is takeaway only.
Group meet ups to be no more than 5. Travel my car to see family over a certain distance, but no train trips to meet friends for the weekend. Will be hard to police the reasons people are visiting but will hopefully stop those who want to do the right thing.
No big events or parties and no reopening of concerts, sports games etc. But you can meet with close friends near you.
Schools may go back for a bit but close again in summer. Some services can again do reduced contact e.g. hairdressing, dentists but may have temperature checks.
Once (if!) they sort out more PPE, you may only use these services with masks. Not sure we'll ever have enough to do that though.
I think it'll end the current culture of hanging out in coffee shops, restaurants, going to anything arts related like a gallery or concert. It's more 'you get something then come home'. Just more range than we have now.