Cheers Pete, the only reason we were considering renting here in the UK and owning a property in Spain was that my partners daughter has here exams next year. We could decorate the new property and use for holidays until we permanently move next year... sounds ok. However, in our situation, education and exams can be sorted in Spain and we are keen to emigrate as soon as possible. If there is a longer delay to Brexit we will still be in the EU and our move and residency application will be easier.
Will have to wait to see if we do get a long extension which I personally think is on the cards...