I'm trying to understand some of the fees - when you go from the fiance visa to the one after marriage, do you have to pay the £1195 again? The change in plans is so last minute that I feel completely unprepared because up until now we'd been planning on the marriage visa. Our wedding date is set, so I'm still not sure what would be best.
The first visa, the fiance visa applied for from the US will cost £1,195 (plus the priority processing fee of £450 if you choose to pay for priority processing).
Then once you are married, and before your fiance visa expires, you will need to apply for a 30-month FLR(M) visa from inside the UK. This currently costs £811, plus £500 NHS surcharge. If you wish to apply in person for a same-day decision, it's an extra £500.
When your FLR(M) visa is about to expire after 2.5 years, you will apply for a second FLR(M) (the fees are likely to have increased by then).
Then when you reach 5 years on FLR(M) visas, you will apply for ILR, which is permanent residence. This currently costs £1,875.
Once you have ILR, you should be able to qualify for UK citizenship, which currently costs £1,236.
So, your visa fees are as follows:
6-month fiance visa (application made in the US):
£1,195
£450 priority processing (optional)
30-month FLR(M) (application made in the UK):
£811
£500 NHS surcharge
£500 for in-person appointment (optional)
Second 30-month FLR(M) (application made in the UK) (2016 prices):
£811
£500 NHS surcharge
£500 for in-person appointment (optional)
ILR after 5 years on FLR(M) (2016 prices):
£1,875
£500 for in-person appointment (optional)
UK citizenship once you have ILR (2016 prices):
£1,236
Would getting a lawyer help? I have access to US immigration lawyers but I'm not sure how much they'd be able to assist with the UK process.
You're very unlikely to need a lawyer - it's a straightforward application and all the information is on the UKVI website. Here on the forum, we know the application process inside out... we can offer any help you need for free.
You would normally only need a lawyer if you have serious reasons why you believe your visa could be refused, such as serious criminal convictions, previous refused entry or visas to the UK, previous illegal overstaying in the UK or previous illegal working in the UK. If your case is straightforward, a lawyer will be unnecessary - a lawyer would set you back several hundred pounds in legal fees though, and that money might as well just be put towards the visa fees instead.
US immigration lawyers will be unable to help as they won't know anything about how to apply for a UK visa. If you did decide to use a lawyer, we only recommend two: Laura Devine (based in NYC and London) and Victoria Sharkey at Medivisas (based in London).