I'm looking for the geographical number for the Aer Lingus - the Irish airline - helpdesk. Their number is 0870 876 2020 but their website does not list any location for their UK offices, but simply gives their address in Ireland. Their website is http://www.flyaerlingus.com

Thanks very much in anticipation.

This is worth a read
http://www.consumeraffairs.com/travel/aer_lingus.htm

There are other numbers on the site. Why not try using a dial thru or voip service to reach one of the international branches. For example the Hungarian number is a Budapest landline (the 1 gives that away) and can be dialled for 1p per min dial thru or free on voip. They speak very good english.

Perhaps someone else can advise.
Is the +353 818 365 044 listed on http://www.flyaerlingus.com/cgi-bin/obel01im1/Corporate/mission.jsp?BV_SessionID=@@@@0367707698.1168415310@@@@&BV_EngineID=ccckaddjlhdmelicefecfigdffgdfkj.0&P_OID=-8048&Category=0 the irish version of 0870? If not then perhaps this could be used instead.

Just to confirm, the Aer Lingus  number in Budapest is +36 1 999 1430 and this is a geographical landline number. It needn't cost more than 1p/min from UK landlines, access numbers are on Martin Lewis's site:

http://callchecker.moneysavingexpert.com/intcallchecker/index.php

The Aer Lingus handling agent at Budapest Airport is Celebi, reachable also on a geographic landline number: +36 1 296 9626

Interestingly, when Aer Lingus started their operations in Hungary they also had a premium rate telephone number, as they still have in most other countries.  However, in Hungary the other airlines have geographic numbers and I expect it was sales considerations that made them change to a geographical number