IS MY 10 DAY ENGLAND ITINERARY DO-ABLE ....

This trip would not work for me because I like to take a lot of time in each spot. You need to look at your travel times between each spot and determine how much time you want to spend in each when you get there. For example, you will get back to London on Day 5 - then you are in the Cotswolds on Day 6 (by train?) - you could spend a lot of time there and then you plan to take the train to Portsmouth and catch a ferry that night? I think all of this is too much. My opinion.

Wouldn't work for me either. Think you are trying to cram in too much. Way too much travelling around. eg Day 1, tate modern and Kew - they are miles away from each other.
You could base in London and do separate day trips to get to a lot of the destinations - eg Brighton, Leeds Castle, Cotswolds. The move to the North and base somewhere you could do the Liverpool/Manchester visits you want (cities about 60 miles apart).

Yes, extremely unrealistic. Since your main interest is football, get more detailed information as far as schedules (fixtures), ticket availability and prices. Manchester United, for example, is a hard ticket to come by and may cost you well over a 100 pounds.
The France excursion is close to being impossible. You might also consider seeing a max of 2 football matches in the London area and scratch going to Manchester & Liverpool. Other than that........!

Thank you Sharon for your post. You are right, at first I had 2 days set aside for the cotswolds because I do really wanna get out and walk thru the fields and see the stone walls. Then I just started to get a little carried away with more things I wanted to see and do.

Hi Katy. That is exactly how I started to plan the trip. Use London as a base and venture out on day trips. The issue became that 10 days in England is part of a 22 day trip that includes Paris and Italy so I attempted to start condensing my time in England. Thank you for bringing me back to reality.

Yes Tim, the matches are definitely a highlight of the trip. I am waiting patiently for next year's fixture list to come out. I realize when I say London match it might be West Ham instead of Arsenal or Manchester might be Bolton instead of Man United. I want to definitely try to go to Manchester on the trip because I am also a big fan of the Manchester Musicical History like the bands The Smiths and Oasis. I was trying to do the D-Day excursion by ferry from England because I wanted to arrive at Normandy from the water and because I have read without renting a car getting to Normandy from Paris via train isn't exactly direct. Maybe if I put that at the end of my England trip and stay overnight in Normandy and then on to Paris. Thank you for your advice Tim.

As you said your main interest seems to be football.
Cause you wont see much eals. Every day has about two days worth of activity crammed in it- you are going to have to set priorities each day, thoroughly se your top one or two priorities Day 1- London Eye could take quite a while, and Kew Gardens really deserves most of a day. Decide which of these three activities is your primary objective for this day- do it and then see what time (if any) is left for priority #2 day 5- no need to say in London. If you really want to see some of Cotswolds, go directly there for night 5. personally you dont allow enough time for more than a glinmpse Manchester/Liverpool football- you are going to have to reserve ahead for these- and be very,very lucky More choice in London. If you dont get the big 3 (Spurs, Arsenal, Chelea0 there are many other clubs. I think over 20 if you count the minor leagues day 11- skip Paris, I cant see that you have any time (How many hours are you there?), fly London to Italy

To enter Normandy by ship from England really is a great way to begin the D-Day experience, so keep that in your plans (just continue in France). Take the train from Caen to Bayeux which is the best place to find guided tours of the landing beaches. And Yes, there are several direct trains a day from Bayeux into Paris (Gare St Lazare). Others just have one change in Caen. I'm assuming you're planning to spend several days in France before heading to Italy.

Thanks Brian. I will need to prioritize definitely. I have decided 2 full days in the Cotswolds is a necessity. Two or three nights in Paris is the plan then train to Venice. This trip might end up closer to 30 days than 20 the way I am going. I appreciate the info Tim. I am totally looking forward to seeing the d-day beaches. I'll go there by ferry after England and stay the night in Caen or Bayeux. Two or three nights in Paris is the plan at this point which should still leave 8-10 days in Italy. Oh and 1 day in Sardinia too of course. Can't go all that way and not see those clear turqoise blue waters and fantastic coves. You only live once.

Tim, plot out a skeleton itinerary with nothing in it but football. Then add your absolute must-see places. Do not underestimate the amount of time you will want to spend there. Then, fill in the other stuff in the remaining slots. I'd suggest you allot two days for the Cotswolds. Otherwise, it's pretty much a drive-thru experience. Consider backing off on some of the castles, unless you have a particular interest. They're all more alike than they are different. The London Eye might eat up half of a day if the queue is long. Meanwhile, an art lover could spend days inside the Tate. Strongly consider keeping all your French tourism separate from your British tourism. Backtracking to the UK is a waste of time. See what you want in the UK, then cross the Channel, see the beaches and get on to Paris from there.

You are spending way too much time travelling from one place to another. You aren't even going to be able to enjoy any place you are in.

It's just about doable - apart from the football tickets.... I've never watched a match in the Uk because getting tickets is so hard, much easier to get to a Barcelona game... and as others have mentioned, more time would be good.