G-TAWE can't be re-issued if it has been used on another aircraft. You're allowed to do this in some countries, Canada and I think the US, not in the UK. Air Canada and Air Transat both operated a TriStar registered C-FTNB, except it wasn't the same airframe with bith carriers unlike sisterships C-FTNA/C which were operated by both airlines...... It can get needlessly confusing.
Once someone has registered a UK mark, it's allocated to one aeroplane for good. (This is the bit where someone says "Ahh except for......")
