Find out if being 10mins late to the shop floor is the real reason, if so, talk about solutions (managers earlier in, giving you keys, etc).
If they argue against your cycle to work, start off by waxing lyrical about the many benefits (happier mind, fitter/healthier staff member, no transport delays), if they still harp on then point out that they're legally harassing you and it's none of their business.
Find out if being 10mins late to the shop floor is the real reason, if so, talk about solutions (managers earlier in, giving you keys, etc).
If they argue against your cycle to work, start off by waxing lyrical about the many benefits (happier mind, fitter/healthier staff member, no transport delays), if they still harp on then point out that they're legally harassing you and it's none of their business.