The ticket won't be repriced (in the sense of base fare changes) on re-issue unless you have flown 0 sectors and you are changing the first flight coupon.

However the taxes/fees part may be recalculated.

No one will stop you exiting the UK for unpaid APD. ;) The airlines report their movements to the Exchequer who then demands the appropriate payment (credit cards not accepted) for the previous year. The airlines may be audited from time to time.

If the airline forgot to pass on the tax to the customer that is a matter between the airline and the customer. The liability rests with the airline not the passenger.

New Version - 1-June-2015
 

Still comparing the new rule sheet to the previous one. Only change I've spotted so far is:

Rule 4(K) - Tampa has been added to the list of East Coast cities from/to which only one transcontinental flight is allowed

dang.

That's a real shame - LAX-TPA, then MIA-LAX is a combination I use a lot.

When are we going to see some changes that are actually positive for the consumer? It's a constant stream of nickel and diming negative changes, price increases, and withdrawals of First on some major routes, e.g. it's now impossible to fly F between Asia/Australia and South Africa.

New Version - 1-September-2015
 

Only changes I've spotted so far:

• Rule 4(K) - Atlanta has been added to the list of East Coast cities from/to which only one transcontinental flight is allowed
  
• Rule 26 -some changes to the booking codes to be used for Group Bookings

:(

Are we going to end up with any flight between PT and ET is "transcon"?

This is very bad for BAEC flyers that were using an xONEx to fly >2000 mile flights. With the addition of TPA and now ATL, there are very few options for >2000 mile flights in A class in the USA (therefore earning 210 TP each flight).

This makes the xONEx fare a little more challenging for BAEC Tier Point runners.

But the intention was always only one trans con flight. There might have been exceptions but they were accidental

If you are a serious TP runner you can still do e.g.,
HNL-PHX-ANC-DFW-LAX-MIA

at 4 lots of 210 + 60 or 900 points in the USA (with one sector left).

ANC/DFW only operates for part of the year.

ANC-PHX is also 210

I believe AA connecting flights with a single flight number and > 2,000 miles also give 210 tier points in F. There may be a few of these.

E.g. Boise-Boston or Boise-Baltimore.

East to spot using the AA timetable pdf

Yes direct flights with stops, with 2000 miles between the ticketed points, still give 210 points provided only one boarding pass is issued. However if there is a change of gauge it might not apply, I would have to check.

They do - I've been able to get six 210 TP sectors in the USA using >2000 direct but not nonstop flights in the past on a DONEx, multiple times. You didn't need it to be one boarding pass either - they would issue it as two, but if they were the same flight number it would credit as one >2000 mile flight. Now that's far more difficult. It's not possible to get all six flights >2000 miles now.

Change of aircraft doesn't matter - as long as it's one flight number, it will credit as one segment.

Are you sure about this? I have heard differently from c-w-s, unless I am getting mixed up. Maybe that only applies to US.

Yes, I'm sure. I've flown these flights fairly routinely on US Airways and American over the years, domestically. There might be a situation where you're talking about a flight with an international and domestic US leg - I haven't flown one of those. But most of the flights in the US that have multiple legs and one flight number are the same plane flying around all day on the same flight number. You just get credit for the distance from your origin and your destination, not each segment.