I moved back from Cyprus after my husbands sudden death last year and I am trying to sell my house there. We lived there for 10 years. My advice is to rent don't buy. Do have a place in UK where you can return to should you need to.
As previously said the National health service ( GESY) is very new and having teething problems, although most expats I know use the private hospitals which are expensive. Nursing and support staff do not necessarily speak English. Home support ie district nursing, Marie Curie, home help etc is non existent unless you pay privately for it. Please also check to see what financial support you will be able to receive once you leave UK. This may well change with Brexit. You will have to register within three months and have proof that you can support your self and not be dependent on the state ( there is no state support unless you have paid into the system)
You did not say which part of Cyprus you were thinking of. The North is Turkish controlled, the South is Greek Cypriot, although it is an independent country. We were in the South. Most Greek Cypriots speak English and the signs are in Roman Script as well as Greek. Shopping is just like UK, except most of the fruit and veg is seasonal. The Alpha Mega stores have a contract with Tesco and stock some of their dried and tinned and small selection of their frozen foods. Lidl is very popular but not the range of foods as you get here, very Cypriot.
We found the Greek Cypriots very friendly and helpful although they do have love of paperwork and rubber stamps! Very little official documents are computerised and post from UK can take up to 8 weeks. any thing ordered from UK, ie from Amazon is only delivered to your address if you live within the towns, otherwise you have to go to the office.
We had a lovely 10 years, but did notice a change but then everything changes. Am I pleased to be home, yes very pleased.