Scottish Power have  set up a dedicated compensation line for people to ring in and claim ,and in there wisdom decided to make it an 0845 one.
But they do offer an online service to claim.

" ScottishPower has set up a £1 million customer compensation fund after regulator Ofgem fined the firm over misselling.

"Customers who believe they may have been missold to can either complete an online form here, or call the dedicated phone number on 0845 030 3048.

ScottishPower will deliver the remaining £7.5 million through payments to customers identified under the Warm Home Discount Scheme.

For more information on the Warm Home Discount Scheme, ScottishPower customers can call 0845 030 3041."

http://www.itv.com/news/update/2013-10-22/scottishpower-compensation-fund-contact-details/

Since posting the above i notice in the main press release an 0800 Freephone  Number people can call.

It is  0800 074 0362

http://www.scottishpower.com/news/pages/scottishpower_to_pay_package_to_benefit_vulnerable_customers_following_agreement_with_the_regulator.asp?__utma=126996495.1216445210.1382500887.1382500887.1382500887.1&__utmb=126996495.5.10.1382500887&__utmc=126996495&__utmx=-&__utmz=126996495.1382500887.1.1.utmcsr=heraldscotland.com|utmccn=(referral)|utmcmd=referral|utmcct=/news/home-news/scottishpower-pays-out-85m-after-mis-selling-probe.1382423579&__utmv=-&__utmk=151112633

Neither of the numbers are of any use to callers using a mobile phone.

Ian G wrote on Oct 23^rd, 2013 at 7:29am:

Neither of the numbers are of any use to callers using a mobile phone.

They would be if you had the BT Smart Talk app ;)

... and, presumably, a BT landline?

sherbert wrote on Oct 23^rd, 2013 at 9:03am:

Ian G wrote on Oct 23rd, 2013 at 7:29am: Neither of the numbers are of any use to callers using a mobile phone. They would be if you had the BT Smart Talk app ;)

Ian G wrote on Oct 23^rd, 2013 at 9:24am:

... and, presumably, a BT landline?

Or use a geo/03 dial through number, then at no cost if you have inclusive minutes or the normal rate for geo numbers if not, examples below.

http://www.0800buster.co.uk/

http://www.moneysavingexpert.com/phones/cut-cost-0800-mobiles#buster

Ian G wrote on Oct 23^rd, 2013 at 7:29am:

Neither of the numbers are of any use to callers using a mobile phone.

Unless they were on Giffgaff or T-Mobile (With Inclusive 08 minutes) .

bigjohn wrote on Oct 23^rd, 2013 at 10:29am:

Ian G wrote on Oct 23rd, 2013 at 7:29am: Neither of the numbers are of any use to callers using a mobile phone. Unless they were on Giffgaff or T-Mobile (With Inclusive 08 minutes) .

It's 080 calls on Giffgaff.

Heinz wrote on Oct 23^rd, 2013 at 10:35am:

bigjohn wrote on Oct 23rd, 2013 at 10:29am: Ian G wrote on Oct 23rd, 2013 at 7:29am: Neither of the numbers are of any use to callers using a mobile phone. Unless they were on Giffgaff or T-Mobile (With Inclusive 08 minutes) . It's 080 calls on Giffgaff.

Did i suggest otherwise ? 

Perhaps I should I have made my post clearer. :)

I read it that way bigjohn (your '08' minutes comment must, by default, have included 084 and 087 calls as well and I wanted to ensure nobody was under that impression).