British brokerage Tullett Prebon is relying on Brunswick Group for a PR defense after the UK's Serious Fraud Office filed criminal charges against TP broker Noel Cryan in the ongoing LIBOR manipulation scandal.

TPIn a statement via Brunswick, London-based TP said it "notes the announcement by the SFO" and called Cryan a "former employee." He was fired in September 2013 for gross misconduct.

The brokerage said this week it is cooperating with the UK's Financial Conduct Authority and other regulators and government agencies.

Brunswick London partner Kim Fletcher and director Craig Breheny speak for TP.

The SFO on Oct. 28 said it charged Cryan with conspiracy to defraud over a 10-month period in 2009.

Reuters reports that US and UK authorities have now charged 18 indiviuduals and fined 10 banks and brokerages in the ongoing probe of manipulations of the London interbank offered rate, or LIBOR. Banks like JPMorgan and Royal Bank of Scotland have paid out more than $6B.

Cryan has sued TP over his firing, denying allegations that he attempted to manipulate the benchmark rate.