Looking for someone who can professionally shorten some textile bike pants. I’m in Cumbria
I would say LSR https://lancashiresportsrepairs.co.uk
as I have used them in the past. But recently called them and e mailed them re a quote to fix a tent. Their pissy attitude to a no response from my email has put me right off them. Besides, they have now proved to be 2x as expensive. It's a shame really as I have used them on 3 or 4 different occasions and their work is good, although it now seems expensive and too much effort for them to respond.
So avoid.
I had some thick kevlar jeans shortened by the gentlemens tailors in Wolverhampton (yes, there is such a thing there!), not much help to you I know, but my point is you don't necessarily need a motorcycle clothing specialist.
My mum, of sainted renown and a former seamstress now in her 80’s, kindly agreed to shorten mine. I don’t think she’ll be persuaded again. The tough but reasonably soft to the feel fabric very nearly broke her (very expensive) sewing machine and she had to do it by hand. I don’t think she was quite as happy as she maybe made out.