On your way to the worlds you could pick one up from the Dutch dealer of Selden/Proctor here:
Optiparts Marine Equipment BV,
Merwedeweg 3A,
3621LP BREUKELEN,
THE NETHERLANDS
t: +31 (0)346-264395
w: http://www.optiparts.com
You don’t even have to make much of a detour, they are right next to the A2 motorway, between Amsterdam and Utrecht.
Getting one from them by mail order may be a bit of a problem. They are most likely under embargo to ship to the UK. And also masts are very expensive items to ship through UPS or TNT because of their length.
Alternatives:
Raceboats
Mesterlodden 36
2820 Gentofte
Denmark
t: +45 39 66 33 22
e: jacob@bmsails.dk
w: http://www.bmsails.dk
f: +45 45 88 60 92
Which is very close to the Worlds venue in Hellerup.
And also Thomas Raun Petersen, the secretary of the Scandinavian Wayfarer association, who has a little shop in Wayfarer specials, can get you a new mast. To be delivered at Hellerup harbour if you should so wish. Give Thomas a call or email.
Wayfarer Trading
Skovgårdsvej 15
2920 Charlottenlund
Denmark
t: (+45) 3964 2007
m: (+45) 6130 6617
e: trp@wt.dk
w: http://www.wt.dk
Thomas is one of the Wayfarers racing.