Yes yoru spot on, just looked into it more and it is TLS 1.0 on chrome and I disabled that upon my IE browser, so may be the issue and explains why. Though as

Yes yoru spot on, just looked into it more and it is TLS 1.0 on chrome and I disabled that upon my IE browser, so may be the issue and explains why. Though as different certificate my initial thoughts are still with some anti IE script of some form - IE gets cert for differnt site and also from same issuing authority. No panic.