Hi everyone, thanks for all the posts and suggestions.
I think I certainly need to look into getting to a gym sooner rather than later. We are in the throws of moving house (and area), so once moved I think I will look to buy an exercise bike as well as finding a gym.
I have found it difficult to get around a golf course at the moment although I did manage 9 holes this week as well as a further walk in the afternoon, consequently I overdid it and suffered badly over the next 2 days, recovering now.
Balance seems to be the main problem especially when turning round on the spot.
The one thing I do try and do is take out my 2 dogs for a walk after lunch every day, they help to keep me walking.
Again thanks to everyone for the welcome and comments.