I've signed a complaint with KPMG in the first 2 days when the site for complaints was online, (if i remember in midle of Feb 2015).
First compensation ( 45% of total amount ) came from KPMG Special Administration in Jul 2015 ... the FSCS final compensation ( 55% in fault ) only came several months later, after a lot of paper going in both directions.
In the end I've got back my 100% Equity + apreciation of USD relative to EUR ( KPMG kept the funds in USD ).
But I do recommend UK ( FCA and FSCS ) ... the alternatives are far worst.
Don't swim with the sharks ...
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