my worry is i can not get much pressure on the glass and being new to wfp im not that confident on these ones.
any help
cheers joe
A longer pole may help with these windows, but don't worry too much about how they come out.
Prior to you using a WFP pole, they wouldn't have been touched and no matter what you do to them, they'll be better than not being done at all.
Over time, they'll improve too; if the first cleans weren't that good.
Although often 'frowned upon' on this site, the five-section Unger alluminium pole would be ideal for this sort of job. It's a tough pole, so you can bang it about on windows above a conservatory (including closing the windows) and you only have to use the sections (each about 6 foot) you need to reach the windows.