Thanks for all your inputthey will have "standard packages" to sell under the Tesco brand but as a proper broker, should be able to tailor something to your needs under their own brand
I have now gone with Voyager long stay Backpacker..gives me 70 days cover for £100.01..
I felt that this was very reasonable for the cover supplied and also the duration...and for those who are interested, this particular option will provide cover for 18 months !
I managed to get through to their call centre very quickly and was connected to a very informative and professional person ( called Michael ) who dealt with all the usual in a very fast, efficient ( and friendly ) manner ...so nothing negative to add.
Now I just need to sort something out for Ukraine...