Abandoned in a zipped-up bag. That was the fate of these two kittens when they were found, by chance, outside the RSPCA shop in Finsbury Park.

There was no note or any indication on the outside of the bag to say there were kittens inside. The bag could have been taken away as rubbish.

The kittens had been completely stitched-up.

Named Sid and Nancy, I met them yesterday, about six-weeks-old, living happily with their foster mum while they wait for a home.

Because the number of unwanted animals is at crisis level, here is an update on places where free or reduced-cost neutering is available.

Please share this information as needed:

The London Cat Care and Control Consortium (C4) offers free neutering of cats subject to eligibility criteria. Go to www.cats.org.uk/c4 and see if you are eligible, then look on the website to find a vet who participates in the scheme. Alternatively ask your vet if they participate in the C4 cat neutering scheme. Please also note that if you live in the required area and have been feeding a stray cat for at least 14 days, the cat can be neutered under this scheme.

The Mayhew Animal Home offers a range of free and low-cost neutering. They neuter bull breed dogs free. For details, call 020 8962 8017. If no reply leave a message. Alternatively email vetclinic@mayhewanimalhome.org.

If you meet their eligibility criteria, the Blue Cross Hospital at Hammersmith offers neutering in exchange for a donation. For details call 0300 7771800.

The RSPCA offers reduced cost neutering, if you fulfil certain conditions (see www.rspca.org.uk and type Putney Animal Hospital into the search box).

If you live within the M25 and attend one of their events, Dogs Trust offers low-cost neutering (subject to availability). Call 020 7837 0006 for details.

Meanwhile, if you can home Sid and Nancy call the RSPCA at 07808 789385.