Just did some start of year cleaning on my brokerage accounts and converted all my funds - including some bond funds - to "clean" funds i.e. stripped of trail commission charges, following the introduction of the Retail Distribution Review rules.
For Sippdeal/YouInvest instructions are here http://www.youinvest.co.uk/CleanFunds/
and the comparison between old and new funds is here: http://www.youinvest.co.uk/Resources/Content/PDF/AJBYI_Clean_funds_reference_list.pdf
Recommend you do the same. Most of my holdings are direct but it would irk me to pay over the odds for my few funds.