(As a US citizen, you do not require a visit visa in advance; under the UK immigration rules you will apply for leave to enter by presenting your passport at the UK Border at the airport.)
V 3.4 An application (except for an application for an extension of stay as a visitor) will be refused if the applicant has been convicted of a criminal offence for which they have been sentenced to a period of imprisonment of:
(a) at least 4 years; or
(b) between 12 months and 4 years, unless at least 10 years have passed since the end of the sentence; or
© less than 12 months, unless at least 5 years has passed since the end of the sentence.
Where this paragraph applies, it will only be in exceptional circumstances that the public interest in maintaining refusal will be outweighed by compelling factors.
V 3.5 An application will normally be refused if:
(a) within the period of 12 months before the application is decided, the applicant has been convicted of or admitted an offence for which they received a non-custodial sentence or out of court disposal that is recorded on their criminal record (except for an application for an extension of stay as a visitor); or
(b) in the view of the Secretary of State the applicant’s offending has caused serious harm; or
© in the view of the Secretary of State the applicant is a persistent offender who shows a particular disregard for the law.
its pretty difficult to enter the UK if you have criminal charges.. Customs go through all the names on the plane before the plane arrives at Heathrow airport.. So as you hand in your passport at immigration red flags appear and you are then escorted by staff to collect your belongings and taken to an interview room for detailed questions.. You need to have a real good story with addresses and contact numbers and what is the purpose of the visit and duration because immigration has the authority to put you back onto the next flight jetting back to the country you have come from…
I know this anon because I have a friends that works at immigration here in Australia and the UK..
I doubt they will let her board the plane, everything is digitized. If she does fly and they find out she was convicted Her home will be the airport like Skippy said if her name comes up on their list. We don’t know and can’t confirm this. Unless someone wants to pay for the background checks. I’m not doing this. There should be an advance checklist before the flight can be purchased.
Another wait and see