I cannot recommend this museum more! Seeing such a wide range of animals and organs preserved for so long for medical science is fascinating and definitely a great place to take kids who are into that kind of thing. It's not a huge museum but I spent a good two hours looking around and could easily have spent longer there.
Lockers are available on floor -1 for a £1 refundable deposit.
Cycle facilities are available outside the museum as well as more racks on the other side of Lincoln's Inn Fields.