score:4
You’re probably over-thinking this. As a US citizen you are eligible to use the eGates to clear UK Immigration, it is therefore quite possible that you won’t be asked any questions at all. https://www.gov.uk/government/publications/coming-to-the-uk/faster-travel-through-the-uk-border
If for some reason you do have a landing interview, the #1 rule is never lie Be prepared to explain, if asked:
You can stay in the UK for up to 6 months per visit. UK Immigration Rules state that visitors must leave the UK at the end of their visit and must not live in the UK for extended periods through frequent or successive visits, or make the UK their main home. https://www.gov.uk/guidance/immigration-rules/immigration-rules-appendix-v-visitor The concept of ‘restarting the clock’ does not really exist, nor is ‘frequent visits’ specifically defined; typically the Rule is interpreted to mean that you should spend at least the same amount of time outside the UK as in it. Getting a visa does not change any of that.
Upvote:0
I once had this issue with a GF who visited me from the US. The main thing to do is carry quite a lot of evidence to show you have no desire to leave the US. Her issue was that she'd been a student in the UK and had more ties to the UK, than US at that time.
So bring with you proof of any ties to US, be it a home rental lease, a job offer there, a car you own, and it should all be fine. They are trying to find people who are planning to move to the UK, so as long as you don't plan to now, it's easy.