Many thanks to all, will come back once had further look. Hose felt was top hose

Hi, Ive got a 96 Defender 90. Driving around up to 50 temp guage is at half way point or just above. On the motorway after about 20 mins at about 60 it begins to go up to the red and ends up just under it or touching it, staying at this level. Once off motorway it goes back down to about two...