Not over here in Germany it's not. The licensing links directly to IARU band plan, so not following those bandplans is an offense. In the UK and elsewhere band plans are optional, guides at best, in Germany and I'm sure some other countries, they are law.
Given that our conclusion at the moment suggests just one frequency could be used between the many European countries who are adopting the WRC15 agreed allocation and the UK, where Ofcom are apparently dragging their feet, perhaps we do need to find a way of operating cross-band between the IARU-WRC band and the UK bandlets as Andy suggests.
Is anyone already doing this?
How are the contacts arranged - are these sked only type contacts?
Can we set some "frequency pairs" for SOTA usage that are standard, so that if an IARU band plan station transmits on lets say 5360 SSB he (or she) always listens on 5360 plus 5300 (sorry if this is a bad choice for some reason - it's just an example). Is there a "common" frequency used in the UK for SOTA - that could perhaps be "paired-up" with a frequency within the WRC15 band, so that the UK SOTA activator would listen on his own transmitted frequency plus a chosen frequency in the WRC15 band.
Does any of this make any sense?
I started my AR hobby in 1974 so I'm used to working split (crystal controlled AM on 2m!), or cross band 2m/70cm.
P.S. Brian, in response to your suggestion to send something to the RSGB, I am already in contact with the RSGB HF Manager, but more importantly if we can agree an internediate solution here for SOTA, I can certainly get it publicised through the AR Podcasts.