Guardian

[hope3fully]

13d river dweller in river 5 h- - - - 5d wide cravat conceals trendy lining 8 -a-n-l- - 18d land with patio,ie ground around front of house 8

[mallyh]

13 h ipp o

[hope3fully]

many thanks

[dannyk13]

13d.Hippo?

[mallyh]

18d all i can think of is forecourt but thats 9

[slaney]

5d W a(in)scot

[Svejk]

5. wainscot

[sedge47]

5d w a in scot
18d Ethiopia (anagram round h)

[slaney]

18d Ethiopia - anagram

[Referee-Observer]

Ethiopia = anagram of patio, ie with front of (h)ouse

[hope3fully]

many thanks to you all

[Referee-Observer]

wainscot
'wide cravat conceals trendy' is the subsidiary indication.
'wide' becomes 'w'
'cravat' becomes 'ascot'
'conceals' means one lot of letters goes inside another.
'trendy' becomes 'in'
'in' placed inside 'ascot' is 'ainscot'
'w'+'ainscot'='wainscot'