Not only have I saved a list I have copies of all the words and sometimes even the tunes when we were having to learn from scratch. I might add that appropriate songs were sung at appropriate seasons such as the two wassails and May songs. So here goes:-

Bedfordshire - The Bedford May Song;
Berkshire - The Vicar of Bray;
Buckinghamshire - A Dashing Young Lad from Buckingham;
Carmbridgeshire - The Cuckoo and the Nightingale;
Cheshire - I Will Give You the Keys of Heaven;
Cornwall - Padstow (what else!);
Cumberland - D'You Ken John Peel;
Derbyshire - The Derby Ram;
Devon - Widdecombe Fair;
Dorset - Linden Lea;
Durham - The Maypole;
Essex - A Bold Young Farmer Courted Me;
Gloucestershire Wassail;
Hampshire - My Bonny Bonny Boy;
Herefordshire - An Old Farmer (sometimes claimed by Yorkshire but definitely Hereford);
Hertfordshire - The Moon Shines Bright (Mayday);
Huntingdonshire - To the Greenwood's We Will Go;
Kent - John Appleby;
Lancashire - Green Gravel (shortest song I could find as I am a Yorkshire lass);
Leicestershire - I'll Tell You of a Fellow;
Lincolnshire - Sir Hugh;
London - Barbara Allen (as quoted in Pepys Diary;
Middlesex - The Bailiff's Daughter of Islington;
Monmouth - The Three Jovial Welshmen;
Norfolk - The Foggy Foggy Dew;
Northamptonshire - The Seeds of Love;
Northumberland - Hexhamshire Lass;
Nottinghamshire - Nottingham Ale;
Oxfordshire - October Brew;
Rutland - Exton May Day Song;
Shropshire - When the Frost Is on the Pumpkin;
Somerset Wassail;
Staffordshire - Polly Oliver;
Suffolk - Oliver Cromwell;
Surrey - A Brisk and Spritely Lad;
Sussex - Twankidillo;
Warwickshire - The Keeper;
Westmorland - A North Country Maid;
Wiltshire - King Arthur's Servant's;
Worcestershire - Sweet William;
Yorkshire East - I Saw Three Ships;
North - Sweet Lass of Richmond Hill;
West - Lord George;
Isle of Man - Spin Wheel Spin;
Isle of Wight - Three Drunken Maidens;
and not least Romany Rai

All safely filed and ready to sing again.