Sky MPF to Talktalk MPF

I am on Sky MPF (full LLU) and out of curiosity I went through the online order form for Talktalk Essentials. It told me that a new line is required and that I could not keep my existing number. Surprised, I went into live chat and the agent confirmed that migration from Sky MPF to Talktalk is not possible. She said the only way to do it was to move to BT for 18 months then move to Talktalk.

I wonder why this is, since it must be costing Talktalk potential business from current Sky customers. Are Openreach unable to perform MPF to MPF migrations?

I moved and ported a number when I went from TalkTalk MPF to Sky MPF.

Sky treated it as a new lime, so had to pay the £30 activation, but full LLU to full LLU is possible. Only TalkTalk's own processes stopping you.

In reply to a post by MrSaffron:

Only TalkTalk's own processes stopping you.

Really odd that Talktalk choose to throw away potential business like that.

In reply to a post by Oliver341:

Are Openreach unable to perform MPF to MPF migrations?

they never were "migrations" in the true sense of the word, but there is an Openreach flowchart for these and for FTTC connected lines too.

It does get a bit complex, see http://www.offta.org.uk/IndustryBPG%20AppendixAMigra... and other best practice guides there.