Question Author
So far:
1. Twists round the centre of the cord. WINDSOR winds + cORd
2. So much grub Ma buys brings it all back in. BAMBURGH = (muc)H GRUB MA B(uys) reversed
3. Also a large cat with limited vision. CLARENCE HOUSE = Clarence the Cross-Eyed Lion
4. Not a low group of trees. HIGHGROVE = high + grove
5. There's a faint tinge before you break a leg. TINTAGEL = tint' + a leg (anagram)
6. Sacred 1210 square yards. HOLYROOD = holy + rood = 1210 square yards
7. The Deputy Head goes wild. DOGE'S = first letter D of Deputy + anagram of GOES. Doge's Palace in Venice
8. Give healing ointment by mouth. BALMORAL = balm + oral
9. Desire for some leather. LONGLEAT = long + LEATher
10. The bronco and the pig. BUCKINGHAM = bucking + ham
11. The value of talks. CHATSWORTH = chats + worth
12. Put half of the cheese into plan. ROCHESTER = CHE(ese) inside ROSTER
13. Get a new pal. Yes. APSLEY = anagram of pal and yes
14. He was a bit twitty in the 50's and 60's. CONWAY (country music singer Conway Twitty)
15. Almost all have a joint and support. ALHAMBRA = AL(l) + HAM + BRA
16. Always follows a home start. HEVER = first letter of Home + ever
17. Smooth down and then phone Noah's son. SANDRINGHAM sand + ring + Ham (Shem, Ham and Japheth)
18. Launder in a spin. ARUNDEL = anagram
19. Turn the crane onto the river. CAERNAVON = anagram of CRANE + Avon (I'm not happy with the spelling though)
20. Dig her bun over. EDINBURGH = anagram
21. The animal by the copse. HAREWOOD = hare + wood
22. Does the Scot know how to warble with only half a tongue. KENSINGTON = KEN (Scottish word for know) + SING (warble) + TON ( half of TONgue)
23. A dog with pets moved in.
24. Sounds as if they originated in Australia. OSBORNE = sounds like Oz born
25. A clear shift between the aerials. HARLECH = H + anagram of CLEAR + H
26. The Norse God was found in one mountain. ALTHORP = THOR inside ALP
27. The bird of peace hits the front room. DOVER = dove + first letter of Room
28. It ought to be in Yorkshire but is actually in Kent. LEEDS (castle in Kent)
29. Well known as an amazing place. HAMPTON COURT (famous for its maze)
30. An apple that is called an orange. BLENHEIM (a Blenheim orange is a large, very tasty apple)
31. Keel after the board move. CASTLE HOWARD = castle (chess move) + Howard (Keel)
32. The Greek S turns left. GLAMIS = anagram of SIGMA + L
33. Gather, without the female, by the deep valley and sports ground. GATCOMBE PARK = GAT(her) + COMBE + PARK
34. Draughts over the pond. CHEQUERS - though US spelling is checkers
35. Battles over the Scottish seaport. WARWICK = war + Wick
36. Might yelp irrationally when coming back in. RIPLEY (castle), backwards in clue (YELP IRrationally)
37. Rummage the silver sale. VERSAILLES = anagram of silver sale
38. I care about the damaged brooks. CARISBROOKE = anagram of I + care + brooks
39. Map the shaft. CHARTWELL = chart + well
40. Alan Wicker lost an ear. ALNWICK = anagram of ALaN WICKer minus the letters EAR - though spelling should be Whicker