As of October 2018 the Nortel Pension Fund has been recovered from the UK government PPF. Individual letters have been sent out showing a recovery of approximately 34% above the PPF figure. There is an expectation (though no guarantee) that by late 2019 there may be further recoveries, bringing the final recovery to something like 40% above the PPF figure.
The Pension Fund is now with Legal & General.
Willis Towers Watson on 01707 607601 have been retained as the primary point of contact.
For a full history of the Pension recovery sage, take a look at the official Nortel Pension website.