I would very much second Mancjules idea of Fred Olsen, and I think they are very good for various reasons.Firstly smaller ships, so not a huge amount of passengers and they can get into smaller areas of places like Fjiords etc. Then the really do have what the others dont, in that they have good libraries, opportunities to play cards and games at different levels. The food was excellent always. I never paid for the separate special meals as the ordinary menus had plenty of choice as far as I was concerned. They have excellent speakers who can talk with real knowledge about places you are visiting etc. I travel alone, and do not have a lot of money so watch out for things where there is no single supplement and am happy to go in an inside cabin as I dont spend a lot of time there. I use a mobility scooter at home, but do not yet have a lightweight one for cruises. Cost but also the weight means that at the moment cant find a very lightweight one I could use in my car, but quite a few people had buggys that they used on the ship , but think you have to book them early to have the space to take one. I have been to the Arctic with them and been involved in a whale watch trip. If I could afford it would go on a lot more. Have never had any complaints with them at all, and my only problem was how far to have to walk from the ship to a bus or whatever, and that is partly as I dont know how I will be from one day to the next. I have once been on a large ship coming from Australia getting on at the last port of call in Lisbon. Was not at all impressed!! Staff are also good if you want to ring them up and discuss a specific cruise and can tell you things. so one or two had a port of call where you went by boat from the ship, so you might not be able to go on that , but they will explain it to you and you can work out if it suits you. Best of luck finding something you enjoy. Who knows we might even meet on a cruise. Oh and of course as I live in the north have no intention of traipsing down to Southampton and I can get cruises from Liverpool, Rosyth, sometimes Newcastle etc.