As some of you will be travelling to the UK for Christmas, the UK Embassy advises anyone who is travelling to prepare for your return to Spain by carrying your residency documents (the green certificate or the new TIE card) with you, which accredit your residency in Spain.
If you live in Spain, but do not yet have these documents, we advise you to travel with any documentation demonstrating that you are a resident, for example: the positive outcome of your residency application, the demonstration that you have applied for residency or any other documentation with you that shows that you are a resident in Spain such as a work contract, tenancy agreement or padron certificate.