Looks like a Sandtoft "Lindum" or Redland "Renown" can you remove one and have a look at the back of it.
Is this the type of vent your after
http://www.sandpipersupplies.co.uk/...jor_-slash-_Redland_Renown_Tile_Vent/[/QUOTE]
read the link earlier and i think its what i want. could really
do with seeing it in the flesh as it just looks like a patch stuck on the tile in the picture!
intention is to fit the velux windows first, then i have some tiles to look at, without having to replace them. just need to get buy them first.
cheers for the info, will post back when stuff starts to happen again.