You're very welcome.
Legacy is a very powerful program. I've been using since 2003 and still haven't learned all the nuances & flexibilites yet. Which, that's a good thing. Learning something new helps keep away the "doldrums" of all the typing. ^_^ I transcribe everything and write extensive notes on my research findings, thoughts, etc. "typers cramp" ouch.
I forgot about this help link... not as active as the LUG (Legacy User Group) that I had to give you the 'detour' to get to it, but this one also has very good help.
Rootsweb L-Archive for Legacy
http://archiver.rootsweb.ancestry.com/th/index/LEGACYAlso, here is the one for Rootsmagic...
Rootsweb L-Archive for Rootsmagic
http://archiver.rootsweb.ancestry.com/th/index/ROOTSMAGIC-US...(that one is usually a little more active)
Here is one more for Legacy. Wonderful help here, very friendly. They do also have "learning hangouts"/videos of "how to" on Legacy. Very warm group. Tessa is wonderful with helping on Legacy. They have people worldwide and so there is bound to be someone to have better answers to your questions.
Legacy Virtual Users Group
https://plus.google.com/communities/102471840504878929586Considering that both Legacy and Rootsmagic have "free" versions, why don't you make a couple of copies of your GEDCOM and import into the softwares and tinker for a bit and see if either one seems to draw you in. Both free versions have most all capabilities except for formatting notes (bold/italic/underline), and a few other simple things. But otherwise all the main things work. All events, all source capabilities. Neither are limited on the size of input for the free versions. Make your database as big as you want.
Legacy will also open multiple databases or multiples of the same one for comparing. Rootsmagic will do at least one extra (if I'm remembering correctly). BOTH will "drag and drop" from when viewing databases side by side. You can import parts of a database or just use the drag and drop and just pick and choose as you go along.
Something on Legacy that I love and I truly wish Rootsmagic would do it... well two things actually... Legacy will, if you hover your mouse over children, it will pop-up their basic information including spouses if you set it to do so. Wonderful for browsing around the youngins seeing who is what & how... (yes, I know, I said who is what... if you display children from all marriages, then you have step-children... or adopted... or god-children, etc... so yeah... "who is what". ^_^)
Legacy will let you set to see all children from multiple marriages and will indicate which spouse is the parent. Setting it to see all children and then having the pop-up of their information is fantastic to keep up with making certain you are getting those kids with the right parents... especially when you have families crossing over and intermarrying. Legacy will help you keep up with them.
Also, on Legacy, on the main family view, if you have multiple spouses for a person... just click the open space to the 'outside' of the person (when you move your mouse to the outside of a person you will see a little bar appear) Click that and you can "rotate" through the spouses.... Same for the parents above if a person has real parents and adopted for example, you can click to the outside of the parents and rotate them.
If you have a person highlighted on the family view and click in the middle (between the husband and wife boxes) you will rotate through the siblings of the person you had highlighted.
Really zippy little things that really can help to quickly assess and figure out who is what, how and where.... ^_^
Rootsmagic, is sadly lacking on these features and I use them heavily. Thus, Legacy is my main program. Rootsmagic makes you have to switch spouses to view the children and it's tedious and can get confusing and thus it's easy to get your data scrambled, ie, typed into the wrong person for example... and I did that 3 times last week. So annoying to realize what I did and have to go back and correct it all. In 10 years usage, I've never done that with Legacy.
Truly hope this all will help you. But seriously.... download a free copy of each software and look at the source templates and see if they appear to do as you need for UK data. Even if you just type in a few names and just make up some stuff for sources and see how it all looks.
Or, another thought... Legacy comes with a sample file... just use that sample file and type up some UK template sources for those 'Americans', just so you can see how the US and UK templates work and their comparisons, and if the UK versions are acceptable. This is what I, personally, would do. Let you get a feel for the software and check out some of those little features I mentioned. ^_^
Okay, I'll shush... I could compare forever and still not hit all the features.
If you have any questions, just give a holler.... we'll do our best with an answer or find someone else that will know it.
Val