Bridlington 1944

I found a photo yesterday of my father and what appears to be a group of trainees.
On the reverse of the photo is the following-
17 Squadron (The 17 isn’t 100% clear and may be wrong)
6 Flight
15 I.T.W
Bridlington
14/1/44

I know very little about what my father did during the war other than the occasional mention of Wellingtons. However if he only went through initial training in 1944 then presumably any flying in Wellingtons would have been during the training period not in actual service???

Any information or leads of any sort would be appreciated.

Thanks
Bazza