A lockdown crossword

Some delightful diversion created for the people of Wanstead by a local contributor who prefers the air of mystery. Answers will follow.

ACROSS

1. A mineral water spring in Wanstead’s park (3)
4. Peace-keeping force injury unravelled (7)
8. Crazy cool korma coat store (9)
10. Local blog criticises a new stadium (11)
12. An ordered formation right inside a beam of light (5)
13. Access the hospital department by the trauma centre (5)
15. Sounds like support for member of the House of Lords (4)
16. It’s inherited as part of a large, neglected estate (4)
17. Initially, eat nothing. Don’t stop (3)
18. Ineffectual short man (3)

DOWN

1. Take a swipe at tactical response team (4)
2. Jab at unfinished card game (4)
3. Mystical light removes top from Laura (4)
4. Lunar vibration relates to a bone in the forearm (5)
5. Curious son returns before end of day (4)
6. Restructuring done for growth (4)
7. Demented dingo performing (5)
8. Looked after sprawling cedar (5)
9. Soft sounds mouthed without exclamation (5)
10. Architect a small bird? (4)
11. “Blokes”, you said, “lunch options?” (4)
12. Animal found in a permanent stupor (3)
14. Colour every other friend (3)