The UK has not carried retired a azygous condemnation for breaches of Russian sanctions, the National Crime Agency has said.
Financial sanctions connected Russia were introduced pursuing the annexation of Crimea successful 2014 and the wider penetration of Ukraine successful 2022.
They see bans connected exporting weapons technology, facilitating the amerciable commercialized of Russian lipid and mostly assisting President Vladimir Putin's government.
A instrumentality was introduced 4 years agone to let the UK to convict those breaching the sanctions.
However, successful a missive to MPs, the NCA's director-general pointed to the complexity of cases and said charges had lone been brought once.
Last week Foreign Secretary David Lammy said helium was making it his "personal ngo to choke disconnected Russian revenues" done sanctions.
But critics person agelong claimed that Western sanctions are little effectual than archetypal hoped, and figures past twelvemonth showed the Russian system was growing.
Investigations into imaginable breaches of fiscal sanctions are carried retired by a Treasury portion called the Office of Financial Sanctions Implementation (OFSI).
The OFSI received an other £50m of backing successful March to amended enforcement of the UK's sanctions regime.
In October, BBC News revealed the OFSI was carrying retired 37 investigations into UK-linked businesses for perchance breaking Russian lipid sanctions.
A further 15 cases had closed without immoderate fines oregon different punishments issued and it is not known however galore much person closed since.
In September, the assemblage issued its archetypal Russia-related punishment erstwhile it fined a concierge institution £15,000 for having a sanctioned idiosyncratic connected its lawsuit list.
London-based steadfast Integral Concierge Services was recovered to person made oregon received 26 payments that progressive a idiosyncratic whose assets had been frozen arsenic portion of the Russia sanctions.
In November, MPs connected Parliament's Treasury Select Committee quizzed OFSI officials astir the effectiveness of their investigations, but officials said the NCA was the assemblage yet liable for prosecuting and convicting those recovered to person breached the rules.
In a consequent missive to the committee's chair, the NCA's Director-General, Graeme Biggar, pointed to the "complex and lengthy" quality of the cases.
He said that akin cases successful comparable countries took an mean of 7 years to beryllium completed.
The Sanctions and Anti Money Laundering Act, which is the authorities utilized to bring prosecutions, was lone introduced 4 years ago.
Mr Biggar said: "Financial investigations of this quality are typically analyzable and lengthy. As a result, determination person been nary concluded prosecutions for offences nether the caller Sanctions and Anti Money Laundering Act."
He added that the NCA had a "number of ongoing investigations with respect to fiscal sanctions breaches and different applicable crimes, immoderate of which are awaiting charging decisions".
In February past year, the NCA did bring charges against the erstwhile politician of a Crimean city, who was charged with 7 counts of circumventing sanctions and 2 of wealth laundering.
Treasury Select Committee seat Dame Meg Hillier said it was "critical the authorities tin show that determination are consequences erstwhile sanctions are breached".
She added that "we indispensable support the unit connected Russia-linked organisations and guarantee determination is simply a wide deterrent which prevents anyone from attempting to circumvent sanctions against Russia".
In November, David Lammy said Western sanctions had "deprived Russia of much than $400 cardinal since February 2022, which is equivalent to 4 much years of backing for the invasion".
When asked by MPs whether helium would beryllium taking enactment against UK companies helping facilitate the Russian lipid industry, helium said, "There is much to come, I suspect, implicit the coming days."
It is understood that nary specified enactment has yet been taken, but the authorities did name erstwhile Labour MP Baroness Margaret Hodge arsenic an anti-corruption champion successful December.