Just updating this thread.... The "cancel requested" status had changed to "cancelled"..... But the 2 bitcoins are not shown in my balance..... Has anyone else ever experienced this? Do you think I'll get them back?
The kraken sounds like it's working in slow motion. If you wait for another day you might get them back.
As a follow up, I can confirm that the 2 x BTC have just appeared back on the account (just over 7hrs after I cancelled the transfer). So, don't panic if this happens to you folks, it's a glitch.