.... by the way, I ask the question about AONE6 rules and legality because I tried the itinerary I have in front of me as a paper ticket on the OW website on the 'fully validated against rules' RTW planning utility and it came up as illegal on at least three technicalities!

No idea if the lovely agents at MRU bypassed something and just ticketed it anyway, but I'm now not sure whether to trust the online planner

- should I just take nielsdc's suggestion to the ticket desk when I next pass through LHR or LGW and get them to work on it?

My dates are fairly flexible.

Best!
HL