Aha! The old chestnut raises it's head once again!
My personal definition of a modern oldie is seventies and eighties stuff that was played between 1978/9 through till the late 80's. But there will be many, many other definitions - depend who you speak to. Yer pay yer money and yer take yer pick!
My mate Terry from Mablethorpe was chatting about you on the phone the other day!