The likelihood is that, by July, we will have normality back to a large extent, including trips abroad. There will continue to be a 'red list', but that's unlikely to include larger EU countries. Even the media leaks all refer to this "normality" by July. The only thing there hasn't been any information on is nightclubs, festivals etc... I am hoping they can restart late summer provided there is an on the day test taken before arrival.
My friend is a promoter and works for Skiddle and Clubland and they've invested a tonne of money in new testing technology including a batch of the 5 minute saliva tests. They are relatively cheap and supposedly 97% accurate.