Its not illogical to believe they would.
Also possible your British friends also blammed and manufsctured evidence to blame Russia.
Unless you are retarded or live under a rock. Globally and non western news sources regularly have anoymous and non anonymous sources which argue and charge the Americans and British with election manipulation, money laundering, coups, regime change, and targeted media campaigns.
I beg any of you Trump haters on here who beliebe anything CNN or NYT says to wonder if maybe you should for once believe NON western sources about the millions of claims against your own government. Heck look at your own evidence for the iran contra or messing around in chile and rest of latin america. Look at what Droneobama did to libya etc