ID please for caterpillar on Raspberry plant

Hi,
My hubby found this caterpillar (?) on our Raspberry plant this evening and I'm wondering if I should be worried?
It was approx 3cm in length.
Hope you can help!
Many thanks......Shoooby

 

Welcome to Gardeners Corner

Not got me books with me but Inchworm springs to mind

 

Thanks Zigs, urgh sounds as horrible as it looks! Is it a pest?
Cheers
Shoooby

 

Not unless all your leaves are disappearing

 

Nope (not yet anyway!), only found the one critter so hopefully not got an infestation
It's not my week as my pest hunter hubby found Sawfly larvae on our gooseberry plant a couple of days ago and that's planted close to the raspberry plant! The sawfly larvae have all been duly picked off and the plant is being treated.
If you do get a positive I.D on the raspberry wormy thing I would be really glad to know (it may stop me itching!) and if it's some type of moth I hope we haven't murdered a good type
Cheers
Shooobz